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Use Redshift Data Scrambling for Additional Data Protection

May 3, 2023

Min Read

Veronica Marinov

Data Security Researcher

According to IBM, a data breach in the United States cost companies an average of 9.44 million dollars in 2022. It is now more important than ever for organizations to place high importance on protecting confidential information. Data scrambling, which can add an extra layer of security to data, is one approach to accomplish this.

In this post, we'll analyze the value of data protection, look at the potential financial consequences of data breaches, and talk about how Redshift Data Scrambling may help protect private information.

The Importance of Data Protection

Data protection is essential to safeguard sensitive data from unauthorized access. Identity theft, financial fraud,and other serious consequences are all possible as a result of a data breach. Data protection is also crucial for compliance reasons. Sensitive data must be protected by law in several sectors, including government, banking, and healthcare. Heavy fines, legal problems, and business loss may result from failure to abide by these regulations.

Hackers employ many techniques, including phishing, malware, insider threats, and hacking, to get access to confidential information. For example, a phishing assault may lead to the theft of login information, and malware may infect a system, opening the door for additional attacks and data theft.

So how to protect yourself against these attacks and minimize your data attack surface?

What is Redshift Data Masking?

Redshift data masking is a technique used to protect sensitive data in Amazon Redshift; a cloud-based data warehousing and analytics service. Redshift data masking involves replacing sensitive data with fictitious, realistic values to protect it from unauthorized access or exposure. It is possible to enhance data security by utilizing Redshift data masking in conjunction with other security measures, such as access control and encryption, in order to create a comprehensive data protection plan.

What is Redshift Data Scrambling?

Redshift data scrambling protects confidential information in a Redshift database by altering original data values using algorithms or formulas, creating unrecognizable data sets. This method is beneficial when sharing sensitive data with third parties or using it for testing, development, or analysis, ensuring privacy and security while enhancing usability.

The technique is highly customizable, allowing organizations to select the desired level of protection while maintaining data usability. Redshift data scrambling is cost-effective, requiring no additional hardware or software investments, providing an attractive, low-cost solution for organizations aiming to improve cloud data security.

Data Masking vs. Data Scrambling

Data masking involves replacing sensitive data with a fictitious but realistic value. However, data scrambling, on the other hand, involves changing the original data values using an algorithm or a formula to generate a new set of values.

In some cases, data scrambling can be used as part of data masking techniques. For instance, sensitive data such as credit card numbers can be scrambled before being masked to enhance data protection further.

Setting up Redshift Data Scrambling

Having gained an understanding of Redshift and data scrambling, we can now proceed to learn how to set it up for implementation. Enabling data scrambling in Redshift requires several steps.

To achieve data scrambling in Redshift, SQL queries are utilized to invoke built-in or user-defined functions. These functions utilize a blend of cryptographic techniques and randomization to scramble the data.

The following steps are explained using an example code just for a better understanding of how to set it up:

Step 1: Create a new Redshift cluster

Create a new Redshift cluster or use an existing cluster if available.

Step 2: Define a scrambling key

Define a scrambling key that will be used to scramble the sensitive data.

 
SET session my_scrambling_key = 'MyScramblingKey';

In this code snippet, we are defining a scrambling key by setting a session-level parameter named <inlineCode>my_scrambling_key<inlineCode> to the value <inlineCode>MyScramblingKey<inlineCode>. This key will be used by the user-defined function to scramble the sensitive data.

Step 3: Create a user-defined function (UDF)

Create a user-defined function in Redshift that will be used to scramble the sensitive data.


CREATE FUNCTION scramble(input_string VARCHAR)
RETURNS VARCHAR
STABLE
AS $$
DECLARE
scramble_key VARCHAR := 'MyScramblingKey';
BEGIN
-- Scramble the input string using the key
-- and return the scrambled output
RETURN ;
END;
$$ LANGUAGE plpgsql;

Here, we are creating a UDF named <inlineCode>scramble<inlineCode> that takes a string input and returns the scrambled output. The function is defined as <inlineCode>STABLE<inlineCode>, which means that it will always return the same result for the same input, which is important for data scrambling. You will need to input your own scrambling logic.

Step 4: Apply the UDF to sensitive columns

Apply the UDF to the sensitive columns in the database that need to be scrambled.


UPDATE employee SET ssn = scramble(ssn);

For example, applying the <inlineCode>scramble<inlineCode> UDF to a column saying, <inlineCode>ssn<inlineCode> in a table named <inlineCode>employee<inlineCode>. The <inlineCode>UPDATE<inlineCode> statement calls the <inlineCode>scramble<inlineCode> UDF and updates the values in the <inlineCode>ssn<inlineCode> column with the scrambled values.

Step 5: Test and validate the scrambled data

Test and validate the scrambled data to ensure that it is unreadable and unusable by unauthorized parties.


SELECT ssn, scramble(ssn) AS scrambled_ssn
FROM employee;

In this snippet, we are running a <inlineCode>SELECT<inlineCode> statement to retrieve the <inlineCode>ssn<inlineCode> column and the corresponding scrambled value using the <inlineCode>scramble<inlineCode> UDF. We can compare the original and scrambled values to ensure that the scrambling is working as expected.

Step 6: Monitor and maintain the scrambled data

To monitor and maintain the scrambled data, we can regularly check the sensitive columns to ensure that they are still rearranged and that there are no vulnerabilities or breaches. We should also maintain the scrambling key and UDF to ensure that they are up-to-date and effective.

Different Options for Scrambling Data in Redshift

Selecting a data scrambling technique involves balancing security levels, data sensitivity, and application requirements. Various general algorithms exist, each with unique pros and cons. To scramble data in Amazon Redshift, you can use the following Python code samples in conjunction with a library like psycopg2 to interact with your Redshift cluster. Before executing the code samples, you will need to install the psycopg2 library:


pip install psycopg2

Random

Utilizing a random number generator, the Random option quickly secures data, although its susceptibility to reverse engineering limits its robustness for long-term protection.


import random
import string
import psycopg2

def random_scramble(data):
    scrambled = ""
    for char in data:
        scrambled += random.choice(string.ascii_letters + string.digits)
    return scrambled

# Connect to your Redshift cluster
conn = psycopg2.connect(host='your_host', port='your_port', dbname='your_dbname', user='your_user', password='your_password')
cursor = conn.cursor()
# Fetch data from your table
cursor.execute("SELECT sensitive_column FROM your_table;")
rows = cursor.fetchall()

# Scramble the data
scrambled_rows = [(random_scramble(row[0]),) for row in rows]

# Update the data in the table
cursor.executemany("UPDATE your_table SET sensitive_column = %s WHERE sensitive_column = %s;", [(scrambled, original) for scrambled, original in zip(scrambled_rows, rows)])
conn.commit()

# Close the connection
cursor.close()
conn.close()

Shuffle

The Shuffle option enhances security by rearranging data characters. However, it remains prone to brute-force attacks, despite being harder to reverse-engineer.


import random
import psycopg2

def shuffle_scramble(data):
    data_list = list(data)
    random.shuffle(data_list)
    return ''.join(data_list)

conn = psycopg2.connect(host='your_host', port='your_port', dbname='your_dbname', user='your_user', password='your_password')
cursor = conn.cursor()

cursor.execute("SELECT sensitive_column FROM your_table;")
rows = cursor.fetchall()

scrambled_rows = [(shuffle_scramble(row[0]),) for row in rows]

cursor.executemany("UPDATE your_table SET sensitive_column = %s WHERE sensitive_column = %s;", [(scrambled, original) for scrambled, original in zip(scrambled_rows, rows)])
conn.commit()

cursor.close()
conn.close()

Reversible

By scrambling characters in a decryption key-reversible manner, the Reversible method poses a greater challenge to attackers but is still vulnerable to brute-force attacks. We’ll use the Caesar cipher as an example.


def caesar_cipher(data, key):
    encrypted = ""
    for char in data:
        if char.isalpha():
            shift = key % 26
            if char.islower():
                encrypted += chr((ord(char) - 97 + shift) % 26 + 97)
            else:
                encrypted += chr((ord(char) - 65 + shift) % 26 + 65)
        else:
            encrypted += char
    return encrypted

conn = psycopg2.connect(host='your_host', port='your_port', dbname='your_dbname', user='your_user', password='your_password')
cursor = conn.cursor()

cursor.execute("SELECT sensitive_column FROM your_table;")
rows = cursor.fetchall()

key = 5
encrypted_rows = [(caesar_cipher(row[0], key),) for row in rows]
cursor.executemany("UPDATE your_table SET sensitive_column = %s WHERE sensitive_column = %s;", [(encrypted, original) for encrypted, original in zip(encrypted_rows, rows)])
conn.commit()

cursor.close()
conn.close()

Custom

The Custom option enables users to create tailor-made algorithms to resist specific attack types, potentially offering superior security. However, the development and implementation of custom algorithms demand greater time and expertise.

Best Practices for Using Redshift Data Scrambling

There are several best practices that should be followed when using Redshift Data Scrambling to ensure maximum protection:

Use Unique Keys for Each Table

To ensure that the data is not compromised if one key is compromised, each table should have its own unique key pair. This can be achieved by creating a unique index on the table.


CREATE UNIQUE INDEX idx_unique_key ON table_name (column_name);

Encrypt Sensitive Data Fields

Sensitive data fields such as credit card numbers and social security numbers should be encrypted to provide an additional layer of security. You can encrypt data fields in Redshift using the ENCRYPT function. Here's an example of how to encrypt a credit card number field:


SELECT ENCRYPT('1234-5678-9012-3456', 'your_encryption_key_here');

Use Strong Encryption Algorithms

Strong encryption algorithms such as AES-256 should be used to provide the strongest protection. Redshift supports AES-256 encryption for data at rest and in transit.


CREATE TABLE encrypted_table (  sensitive_data VARCHAR(255) ENCODE ZSTD ENCRYPT 'aes256' KEY 'my_key');

Control Access to Encryption Keys

Access to encryption keys should be restricted to authorized personnel to prevent unauthorized access to sensitive data. You can achieve this by setting up an AWS KMS (Key Management Service) to manage your encryption keys. Here's an example of how to restrict access to an encryption key using KMS in Python:


import boto3

kms = boto3.client('kms')

key_id = 'your_key_id_here'
grantee_principal = 'arn:aws:iam::123456789012:user/jane'

response = kms.create_grant(
    KeyId=key_id,
    GranteePrincipal=grantee_principal,
    Operations=['Decrypt']
)

print(response)

Regularly Rotate Encryption Keys

Regular rotation of encryption keys ensures that any compromised keys do not provide unauthorized access to sensitive data. You can schedule regular key rotation in AWS KMS by setting a key policy that specifies a rotation schedule. Here's an example of how to schedule annual key rotation in KMS using the AWS CLI:

 
aws kms put-key-policy \\
    --key-id your_key_id_here \\
    --policy-name default \\
    --policy
    "{\\"Version\\":\\"2012-10-17\\",\\"Statement\\":[{\\"Effect\\":\\"Allow\\"
    "{\\"Version\\":\\"2012-10-17\\",\\"Statement\\":[{\\"Effect\\":\\"Allow\\"
    \\":\\"kms:RotateKey\\",\\"Resource\\":\\"*\\"},{\\"Effect\\":\\"Allow\\",\
    \"Principal\\":{\\"AWS\\":\\"arn:aws:iam::123456789012:root\\"},\\"Action\\
    ":\\"kms:CreateGrant\\",\\"Resource\\":\\"*\\",\\"Condition\\":{\\"Bool\\":
    {\\"kms:GrantIsForAWSResource\\":\\"true\\"}}}]}"

Turn on logging

To track user access to sensitive data and identify any unwanted access, logging must be enabled. All SQL commands that are executed on your cluster are logged when you activate query logging in Amazon Redshift. This applies to queries that access sensitive data as well as data-scrambling operations. Afterwards, you may examine these logs to look for any strange access patterns or suspect activities.

You may use the following SQL statement to make query logging available in Amazon Redshift:

ALTER DATABASE  SET enable_user_activity_logging=true;

The stl query system table may be used to retrieve the logs once query logging has been enabled. For instance, the SQL query shown below will display all queries that reached a certain table:

Monitor Performance

Data scrambling is often a resource-intensive practice, so it’s good to monitor CPU usage, memory usage, and disk I/O to ensure your cluster isn’t being overloaded. In Redshift, you can use the <inlineCode>svl_query_summary<inlineCode> and <inlineCode>svl_query_report<inlineCode> system views to monitor query performance. You can also use Amazon CloudWatch to monitor metrics such as CPU usage and disk space.

Establishing Backup and Disaster Recovery

In order to prevent data loss in the case of a disaster, backup and disaster recovery mechanisms should be put in place. Automated backups and manual snapshots are only two of the backup and recovery methods offered by Amazon Redshift. Automatic backups are taken once every eight hours by default.

Moreover, you may always manually take a snapshot of your cluster. In the case of a breakdown or disaster, your cluster may be restored using these backups and snapshots. Use this SQL query to manually take a snapshot of your cluster in Amazon Redshift:

CREATE SNAPSHOT ;

To restore a snapshot, you can use the <inlineCode>RESTORE<inlineCode> command. For example:


RESTORE 'snapshot_name' TO 'new_cluster_name';

Frequent Review and Updates

To ensure that data scrambling procedures remain effective and up-to-date with the latest security requirements, it is crucial to consistently review and update them. This process should include examining backup and recovery procedures, encryption techniques, and access controls.

In Amazon Redshift, you can assess access controls by inspecting all roles and their associated permissions in the <inlineCode>pg_roles<inlineCode> system catalog database. It is essential to confirm that only authorized individuals have access to sensitive information.

To analyze encryption techniques, use the <inlineCode>pg_catalog.pg_attribute<inlineCode> system catalog table, which allows you to inspect data types and encryption settings for each column in your tables. Ensure that sensitive data fields are protected with robust encryption methods, such as AES-256.

The AWS CLI commands <inlineCode>aws backup plan<inlineCode> and <inlineCode>aws backup vault<inlineCode> enable you to review your backup plans and vaults, as well as evaluate backup and recovery procedures. Make sure your backup and recovery procedures are properly configured and up-to-date.

Decrypting Data in Redshift

There are different options for decrypting data, depending on the encryption method used and the tools available; the decryption process is similar to of encryption, usually a custom UDF is used to decrypt the data, let’s look at one example of decrypting data scrambling with a substitution cipher.

Step 1: Create a UDF with decryption logic for substitution


CREATE FUNCTION decrypt_substitution(ciphertext varchar) RETURNS varchar
IMMUTABLE AS $$
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    substitution = 'ijklmnopqrstuvwxyzabcdefgh'
    reverse_substitution = ''.join(sorted(substitution, key=lambda c: substitution.index(c)))
    plaintext = ''
    for i in range(len(ciphertext)):
        index = substitution.find(ciphertext[i])
        if index == -1:
            plaintext += ciphertext[i]
        else:
            plaintext += reverse_substitution[index]
    return plaintext
$$ LANGUAGE plpythonu;

Step 2: Move the data back after truncating and applying the decryption function


TRUNCATE original_table;
INSERT INTO original_table (column1, decrypted_column2, column3)
SELECT column1, decrypt_substitution(encrypted_column2), column3
FROM temp_table;

In this example, encrypted_column2 is the encrypted version of column2 in the temp_table. The decrypt_substitution function is applied to encrypted_column2, and the result is inserted into the decrypted_column2 in the original_table. Make sure to replace column1, column2, and column3 with the appropriate column names, and adjust the INSERT INTO statement accordingly if you have more or fewer columns in your table.

Conclusion

Redshift data scrambling is an effective tool for additional data protection and should be considered as part of an organization's overall data security strategy. In this blog post, we looked into the importance of data protection and how this can be integrated effectively into the data warehouse. Then, we covered the difference between data scrambling and data masking before diving into how one can set up Redshift data scrambling.

Once you begin to accustom to Redshift data scrambling, you can upgrade your security techniques with different techniques for scrambling data and best practices including encryption practices, logging, and performance monitoring. Organizations may improve their data security posture management (DSPM) and reduce the risk of possible breaches by adhering to these recommendations and using an efficient strategy.

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‍

Veronica Marinov

Data Security Researcher

Veronica is the security researcher at Sentra. She brings a wealth of knowledge and experience as a cybersecurity researcher. Her main focuses are researching the main cloud provider services and AI infrastructures for Data related threats and techniques.

Latest Blog Posts

Yair Cohen

December 28, 2025

Min Read

What CISOs Learned in 2025: The 5 Data Security Priorities Coming in 2026

2025 was a pivotal year for Chief Information Security Officers (CISOs). As cyber threats surged and digital acceleration transformed business, CISOs gained more influence in boardrooms but also took on greater accountability. The old model of perimeter-based defense has ended. Security strategies now focus on resilience and real-time visibility with sensitive data protection at the core.

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As 2026 approaches, CISOs are turning this year’s lessons into a proactive, AI-smart, and business-aligned strategy. This article highlights the top CISO priorities for 2026, the industry’s shift from prevention to resilience, and how Sentra supports security leaders in this new phase.

Lessons from 2025: Transparency, AI Risk, and Platform Resilience

Over the past year, CISOs encountered high-profile breaches and shifting demands. According to the Splunk 2025 CISO Report an impressive 82% reported direct interactions with CEOs, and 83% regularly attended board meetings. Still, only 29% of board members had cybersecurity experience, leading to frequent misalignment around budgets, innovation, and staffing.

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The data is clear: 76% of CISOs expected a significant cyberattack, but 58% felt unprepared, as reported in the Proofpoint 2025 Voice of the CISO Report. Many CISOs struggled with overwhelming tool sprawl and alert fatigue, 76% named these as major challenges. The rapid growth in cloud, SaaS, and GenAI environments left major visibility gaps, especially for unstructured and shadow data. Most of all, CISOs concluded that resilience - quick detection, rapid response, and keeping the business running, matters more than just preventing attacks. This shift is changing the way security budgets will be spent in 2026.

The Evolution of DSPM: From Inventory to Intelligent, AI-Aware Defense

First generation data security posture management (DSPM) tools focused on identifying assets and manually classifying data. Now, CISOs must automatically map, classify, and assign risk scores to data - structured, unstructured, or AI-generated - across cloud, on-prem and SaaS environments, instantly. If organizations lack this capability, critical data remains at risk (Data as the Core Focus in the Cloud Security Ecosystem).

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AI brings both opportunity and risk. CISOs are working to introduce GenAI security policies while facing challenges like data leakage, unsanctioned AI projects, and compliance issues. DSPM solutions that use machine learning and real-time policy enforcement have become essential.

The Top Five CISO Priorities in 2026

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Secure and Responsible AI: As AI accelerates across the business, CISOs must ensure it does not introduce unmanaged data risk. The focus will be on maintaining visibility and control over sensitive data used by AI systems, preventing unintended exposure, and establishing governance that allows the company to innovate with AI while protecting trust, compliance, and brand reputation.

Modern Data Governance: As sensitive data sprawls across on-prem, cloud, SaaS, and data lakes, CISOs face mounting compliance pressure without clear visibility into where that data resides. The priority will be establishing accurate classification and governance of sensitive, unstructured, and shadow data - not only to meet regulatory obligations, but to proactively reduce enterprise risk, limit blast radius, and strengthen overall security posture.
Tool Consolidation: As cloud and application environments grow more complex, CISOs are under pressure to reduce data sprawl without increasing risk. The priority is consolidating fragmented cloud and application security tools into unified platforms that embed protection earlier in the development lifecycle, improve risk visibility across environments, and lower operational overhead. For boards, this shift represents both stronger security outcomes and a clearer return on security investment through reduced complexity, cost, and exposure.

Offensive Security/Continuous Testing: One-time security assessments can no longer keep pace with AI-driven and rapidly evolving threats. CISOs are making continuous offensive security a core risk-management practice, regularly testing environments across hardware, cloud, and SaaS to expose real-world vulnerabilities. For the board, this provides ongoing validation of security effectiveness and reduces the likelihood of unpleasant surprises from unknown exposures. Some exciting new AI red team solutions are appearing on the scene such as 7ai, Mend.io, Method Security, and Veria Labs.

Zero Trust Identity Governance: Identity has become the primary attack surface, making advanced governance essential rather than optional. CISOs are prioritizing data-centric, Zero Trust identity controls to limit excessive access, reduce insider risk, and counter AI-enabled attacks. At the board level, this shift is critical to protecting sensitive assets and maintaining resilience against emerging threats.

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These areas show a greater need for automation, better context, and clearer reporting for boards.

‍

Sentra Enables Secure and Responsible AI with Modern Data Governance

As AI becomes central to business strategy, CISOs are being held accountable for ensuring innovation does not outpace security, governance, or trust. Secure and Responsible AI is no longer about policy alone, it requires continuous visibility into the sensitive data flowing into AI systems, control over shadow and AI-generated data, and the ability to prevent unintended exposure before it becomes a business risk.

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At the same time, Modern Data Governance has emerged as a foundational requirement. Exploding data volumes across cloud, SaaS, data lakes, and on-prem environments have made traditional governance models ineffective. CISOs need accurate classification, unified visibility, and enforceable controls that go beyond regulatory checkboxes to actively reduce enterprise risk.

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Sentra brings these priorities together by giving security leaders a clear, real-time understanding of where sensitive data lives, how it is being used - including by AI - and where risk is accumulating across the organization. By unifying DSPM and Data Detection & Response (DDR), Sentra enables CISOs to move from reactive security to proactive governance, supporting AI adoption while maintaining compliance, resilience, and board-level confidence.

Looking ahead to 2026, the CISOs who lead will be those who can see, govern, and secure their data everywhere it exists and ensure it is used responsibly to power the next phase of growth. Sentra provides the foundation to make that possible.

Conclusion

The CISO’s role in 2025 shifted from putting out fires to driving change alongside business leadership. Expectations will keep rising in 2026; balancing board expectations, the opportunities and threats of AI, and constant new risks takes a smart platform and real-time clarity.

‍

Sentra delivers the foundation and intelligence CISOs need to build resilience, stay compliant, and fuel data-powered AI growth with secure data. Those who can see, secure, and respond wherever their data lives will lead. Sentra is your partner to move forward with confidence in 2026.

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Meni Besso

December 23, 2025

Min Read

Compliance

How to Scale DSAR Compliance (Without Breaking Your Team)

Data Subject Access Requests (DSARs) are one of the most demanding requirements under privacy regulations such as GDPR and CPRA. As personal data spreads across cloud, SaaS, and legacy systems, responding to DSARs manually becomes slow, costly, and error-prone. This article explores why DSARs are so difficult to scale, the key challenges organizations face, and how DSAR automation enables faster, more reliable compliance.

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Privacy regulations are no longer just legal checkboxes, they are a foundation of customer trust. In today’s data-driven world, individuals expect transparency into how their personal information is collected, used, and protected. Organizations that take privacy seriously demonstrate respect for their users, strengthening trust, loyalty, and long-term engagement.

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Among these requirements, DSARs are often the most complex to support. They give individuals the right to request access to their personal data, typically with a strict response deadline of 30 days. For large enterprises with data scattered across cloud, SaaS, and on-prem environments, even a single request can trigger a frantic search across multiple systems, manual reviews, and legal oversight - quickly turning DSAR compliance into a race against the clock, with reputation and regulatory risk on the line.

What Is a Data Subject Access Request (DSAR)?

A Data Subject Access Request (DSAR) is a legal right granted under privacy regulations such as GDPR and CPRA that allows individuals to request access to the personal data an organization holds about them. In many cases, individuals can also request information about how that data is used, shared, or deleted.

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Organizations are typically required to respond to DSARs within a strict timeframe, often 30 days, and must provide a complete and accurate view of the individual’s personal data. This includes data stored in databases, files, logs, SaaS platforms, and other systems across the organization.

Why DSAR Requests Are Difficult to Manage at Scale

DSARs are relatively manageable for small organizations with limited systems. At enterprise scale, however, they become significantly more complex. Personal data is no longer centralized. It is distributed across cloud platforms, SaaS applications, data lakes, file systems, and legacy infrastructure. Privacy teams must coordinate with IT, security, legal, and data owners to locate, review, and validate data before responding. As DSAR volumes increase, manual processes quickly break down, increasing the risk of delays, incomplete responses, and regulatory exposure.

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Key Challenges in Responding to DSARs

Data Discovery & Inventory

‍For large organizations, pinpointing where personal data resides across a diverse ecosystem of information systems, including databases, SaaS applications, data lakes, and legacy environments, is a complex challenge. The presence of fragmented IT infrastructure and third-party platforms often leads to limited visibility, which not only slows down the DSAR response process but also increases the likelihood of missing or overlooking critical personal data.

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Linking Identities Across Systems‍

A single individual may appear in multiple systems under different identifiers, especially if systems have been acquired or integrated over time. Accurately correlating these identities to compile a complete DSAR response requires sophisticated identity resolution and often manual effort.

Unstructured Data Handling

‍Unlike structured databases, where data is organized into labeled fields and can be efficiently queried, unstructured data (like PDFs, documents, and logs) is free-form and lacks consistent formatting. This makes it much harder to search, classify, or extract relevant personal information.
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Response Timeliness

‍Regulatory deadlines force organizations to respond quickly, even when data must be gathered from multiple sources and reviewed by legal teams. Manual processes can lead to delays, risking non-compliance and fines.

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Volume & Scalability

‍While most organizations can handle an occasional DSAR manually, spikes in request volume - driven by events like regulatory campaigns or publicized incidents - can overwhelm privacy and legal teams. Without scalable automation, organizations face mounting operational costs, missed deadlines, and an increased risk of inconsistent or incomplete responses.

The Role of Data Security Platforms in DSAR Automation

Sentra is a modern data security platform dedicated to helping organizations gain complete visibility and control over their sensitive data. By continuously scanning and classifying data across all environments (including cloud, SaaS, and on-premises systems) Sentra maintains an always up-to-date data map, giving organizations a clear understanding of where sensitive data resides, how it flows, and who has access to it. This data map forms the foundation for efficient DSAR automation, enabling Sentra’s DSAR module to search for user identifiers only in locations where relevant data actually exists - ensuring high accuracy, completeness, and fast response times.

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Data Security Platform example of US SSN finding

Another key factor in managing DSAR requests is ensuring that sensitive customer PII doesn’t end up in unauthorized or unintended environments. When data is copied between systems or environments, it’s essential to apply tokenization or masking to prevent unintentional sprawl of PII. Sentra helps identify misplaced or duplicated sensitive data and alerts when it isn’t properly protected. This allows organizations to focus DSAR processing within authorized operational environments, significantly reducing both risk and response time.

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Smart Search of Individual Data

To initiate the generation of a Data Subject Access Request (DSAR) report, users can submit one or more unique identifiers—such as email addresses, Social Security numbers, usernames, or other personal identifiers—corresponding to the individual in question. Sentra then performs a targeted scan across the organization’s data ecosystem, focusing on data stores known to contain personally identifiable information (PII). This includes production databases, data lakes, cloud storage services, file servers, and both structured and unstructured data sources.

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Leveraging its advanced classification and correlation capabilities, Sentra identifies all relevant records associated with the provided identifiers. Once the scan is complete, it compiles a comprehensive DSAR report that consolidates all discovered personal data linked to the data subject that can be downloaded as a PDF for manual review or securely retrieved via Sentra’s API.

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Establishing a DSAR Processing Pipeline
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Large organizations that receive a high volume of DSAR (Data Subject Access Request) submissions typically implement a robust, end-to-end DSAR processing pipeline. This pipeline is often initiated through a self-service privacy portal, allowing individuals to easily submit requests for access or deletion of their personal data. Once a request is received, an automated or semi-automated workflow is triggered to handle the request efficiently and in compliance with regulatory timelines.

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Requester Identity Verification: Confirm the identity of the data subject to prevent unauthorized access (e.g., via email confirmation or secure login).
Mapping Identifiers: Collect and map all known identifiers for the individual across systems (e.g., email, user ID, customer number).
Environment-Wide Data Discovery (via Sentra): Use Sentra to search all relevant environments — cloud, SaaS, on-prem — for personal data tied to the individual. By using Sentra’s automated discovery and classification, Sentra can automatically identify where to search for.
DSAR Report Generation (via Sentra): Compile a detailed report listing all personal data found and where it resides.
Data Deletion & Verification: Remove or anonymize personal data as required, then rerun a search to verify deletion is complete.
Final Response to Requester: Send a confirmation to the requester, outlining the actions taken and closing the request.

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Sentra plays a key role in the DSAR pipeline by exposing a powerful API that enables automated, organization-wide searches for personal data. The search results can be programmatically used to trigger downstream actions like data deletion. After removal, the API can initiate a follow-up scan to verify that all data has been successfully deleted.

Benefits of DSAR Automation

With privacy regulations constantly growing, and DSAR volumes continuing to rise, building an automated, scalable pipeline is no longer a luxury - it’s a necessity.

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Automated and Cost-Efficient: Replaces costly, error-prone manual processes with a streamlined, automated approach.
High-Speed, High-Accuracy: Sentra leverages its knowledge of where PII resides to perform targeted searches across all environments and data types, delivering comprehensive reports in hours—not days.
Seamless Integration: A powerful API allows integration with workflow systems, enabling a fully automated, end-to-end DSAR experience for end users.

By using Sentra to intelligently locate PII across all environments, organizations can eliminate manual bottlenecks and accelerate response times. Sentra’s powerful API and deep data awareness make it possible to automate every step of the DSAR journey - from discovery to deletion - enabling privacy teams to operate at scale, reduce costs, and maintain compliance with confidence.

Turning DSAR Compliance into a Scalable Advantage with Automation

As privacy expectations grow and regulatory pressure intensifies, DSARs are no longer just a compliance checkbox, they are a reflection of how seriously an organization treats user trust. Manual, reactive processes simply cannot keep up with the scale and complexity of modern data environments, especially as personal data continues to spread across cloud, SaaS, and on-prem systems.

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By automating DSAR workflows with a data-centric security platform like Sentra, organizations can respond faster, reduce compliance risk, and lower operational costs - all while freeing privacy and legal teams to focus on higher-value initiatives. In this way, DSAR compliance becomes not just a regulatory obligation, but a measure of operational maturity and a scalable advantage in building long-term trust.

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Dean Taler

December 22, 2025

Min Read

Building Automated Data Security Policies for 2026: What Security Teams Need Now

Learn how to build automated data security policies that reduce data exposure, meet GDPR, PCI DSS, and HIPAA requirements, and scale data governance across cloud, SaaS, and AI-driven environments as organizations move into 2026.

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As 2025 comes to a close, one reality is clear: automated data security and governance programs are a must-have to truly leverage data and AI. Sensitive data now moves faster than human review can keep up with. It flows across multi-cloud storage, SaaS platforms, collaboration tools, logging pipelines, backups, and increasingly, AI and analytics workflows that continuously replicate data into new locations. For security and compliance teams heading into 2026, periodic audits and static policies are no longer sufficient. Regulators, customers, and boards now expect continuous visibility and enforcement.

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This is why automated data security policies have become a foundational control, not a “nice to have.”

In this blog, we focus on how data security policies are actually used at the end of 2025, and how to design them so they remain effective in 2026.

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You’ll learn:

The most important compliance and risk-driven policy use cases
How organizations operationalize data security policies at scale
Practical examples aligned with GDPR, PCI DSS, HIPAA, and internal governance

Why Automated Data Security Policies Matter Heading into 2026

The direction of regulatory enforcement and threat activity is consistent:

Continuous compliance is now expected, not implied
Overexposed data is increasingly used for extortion, not just theft
Organizations must prove they know where sensitive data lives and who can access it

Recent enforcement actions have shown that organizations can face penalties even without a breach, simply for storing regulated data in unapproved locations or failing to enforce access controls consistently.

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Automated data security policies address this gap by continuously evaluating:

Data sensitivity
Access scope
Storage location and residency
surfacing violations in near real time.

Three Data Security Policy Use Cases That Deliver Immediate Value

As organizations prepare for 2026, most start with policies that reduce data exposure quickly.

1. Limiting Data Exposure and Ransomware Impact

Misconfigured access and excessive sharing remain the most common causes of data exposure. In cloud and SaaS environments, these issues often emerge gradually, and go unnoticed without automation.

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High-impact policies include:

Sensitive data shared with external users: Detect files containing credentials, PII, or financial data that are accessible to outside collaborators.
Overly broad internal access to sensitive data: Identify data shared with “Anyone in the organization,” significantly increasing exposure during account compromise.

These policies reduce blast radius and help prevent data from becoming leverage in extortion-based attacks.

2. Enforcing Secure Data Storage and Handling (PCI DSS, HIPAA, SOC 2)

Compliance violations in 2025 rarely result from intentional misuse. They happen because sensitive data quietly appears in the wrong systems.

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Common policy findings include:

Payment card data in application logs or monitoring tools: A persistent PCI DSS issue, especially in modern microservice environments.
Employee or patient records stored in collaboration platforms: PII and PHI often end up in user-managed drives without appropriate safeguards.

Automated policies continuously detect these conditions and support fast remediation, reducing audit findings and operational risk.

3. Maintaining Data Residency and Sovereignty Compliance

As global data protection enforcement intensifies, data residency violations remain one of the most common and costly compliance failures.

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Automated policies help identify:

EU personal data stored outside approved EU regions: A direct GDPR violation that is common in multi-cloud and SaaS environments.
Cross-region replicas and backups containing regulated data: Secondary storage locations frequently fall outside compliance controls.

These policies enable organizations to demonstrate ongoing compliance, not just point-in-time alignment.

What Modern Data Security Policies Must Do (2026-Ready)

As teams move into 2026, effective data security policies share three traits:

They are data-aware: Policies are based on data sensitivity - not just resource labels or storage locations.
They operate continuously: Policies evaluate changes as data is created, moved, shared, or copied into new systems.
They drive action: Every violation maps to a remediation path: restrict access, move data, or delete it.

This is what allows security teams to scale governance without slowing the business.

Conclusion: From Static Rules to Continuous Data Governance

Heading into 2026, automated data security policies are no longer just compliance tooling, they are a core layer of modern security architecture.

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They allow organizations to:

Reduce exposure and ransomware risk
Enforce regulatory requirements continuously
Govern sensitive data across cloud, SaaS, and AI workflows

Most importantly, they replace reactive audits with real-time data governance.

Organizations that invest in automated, data-aware security policies today will enter 2026 better prepared for regulatory scrutiny, evolving threats, and the continued growth of their data footprint.

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Use Redshift Data Scrambling for Additional Data Protection

The Importance of Data Protection

What is Redshift Data Masking?

What is Redshift Data Scrambling?

Data Masking vs. Data Scrambling

Setting up Redshift Data Scrambling

Step 1: Create a new Redshift cluster

Step 2: Define a scrambling key

Step 3: Create a user-defined function (UDF)

Step 4: Apply the UDF to sensitive columns

Step 5: Test and validate the scrambled data

Step 6: Monitor and maintain the scrambled data

Different Options for Scrambling Data in Redshift

Random

Shuffle

Reversible

Custom

Best Practices for Using Redshift Data Scrambling

Use Unique Keys for Each Table

Encrypt Sensitive Data Fields

Use Strong Encryption Algorithms

Control Access to Encryption Keys

Regularly Rotate Encryption Keys

Turn on logging

Monitor Performance

Establishing Backup and Disaster Recovery

Frequent Review and Updates

Decrypting Data in Redshift

Step 1: Create a UDF with decryption logic for substitution

Step 2: Move the data back after truncating and applying the decryption function

Conclusion

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Conclusion

How to Scale DSAR Compliance (Without Breaking Your Team)

How to Scale DSAR Compliance (Without Breaking Your Team)

What Is a Data Subject Access Request (DSAR)?

Why DSAR Requests Are Difficult to Manage at Scale

Key Challenges in Responding to DSARs

Data Discovery & Inventory

Linking Identities Across Systems‍

Unstructured Data Handling

Response Timeliness

Volume & Scalability

The Role of Data Security Platforms in DSAR Automation

Smart Search of Individual Data

Establishing a DSAR Processing Pipeline‍

Benefits of DSAR Automation

Turning DSAR Compliance into a Scalable Advantage with Automation

Building Automated Data Security Policies for 2026: What Security Teams Need Now

Building Automated Data Security Policies for 2026: What Security Teams Need Now

Why Automated Data Security Policies Matter Heading into 2026

Three Data Security Policy Use Cases That Deliver Immediate Value

1. Limiting Data Exposure and Ransomware Impact

2. Enforcing Secure Data Storage and Handling (PCI DSS, HIPAA, SOC 2)

3. Maintaining Data Residency and Sovereignty Compliance

What Modern Data Security Policies Must Do (2026-Ready)

Conclusion: From Static Rules to Continuous Data Governance

Get the Gartner Customers' Choice for DSPM Report

Establishing a DSAR Processing Pipeline
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