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Data Loss Prevention for Google Workspace

March 19, 2025
4
Min Read
Data Loss Prevention

We know that Google Workspace (formerly known as G Suite) and its assortment of services, including Gmail, Drive, Calendar, Meet, Docs, Sheets, Slides, Chat, and Vids, is a powerhouse for collaboration.

But the big question is: Do you know where your Google Workspace data is—and if it’s secure and who has access to it?

While Google Workspace has become an indispensable pillar in cloud operations and collaboration, its widespread adoption introduces significant security risks that businesses simply can't afford to ignore. To optimize Google Workspace data protection, enterprises must know how Google Workspace protects and classifies data. Knowing the scope, gaps, limitations, and silos of Google Workspace data protection mechanisms can help businesses strategize more effectively to mitigate data risks and ensure more holistic data security coverage across multi-cloud estates.

The Risks of Google Workspace Security

As with any dynamic cloud platform, Google Workspace is susceptible to data security risks, the most dangerous of which can do more than just undercut its benefits. Primarily, businesses should be concerned about the exposure of sensitive data nested within large volumes of unstructured data. For instance, if an employee shares a Google Drive folder or document containing sensitive data but with suboptimal access controls, it could snowball into a large-scale data security disaster. 

Without comprehensive visibility into sensitive data exposures across Google Workspace applications, businesses risk serious security threats. Besides sensitive data exposure, these include exploitable vulnerabilities, external attacks, human error, and shadow data. Complex shared responsibility models and unmet compliance policies also loom large, threatening the security of your data. 

To tackle these risks, businesses must prioritize and optimize data security across Google Workspace products while acknowledging that Google is rarely the sole platform an enterprise uses.

How Does Google Store Your Data?

To understand how to protect sensitive data in Google Workspace, it's essential to first examine how Google stores and manages this data. Why? Because the intricacies of data storage architectures and practices have significant implications for your security posture. 

Here are three-steps to help you understand and optimize your data storage in Google Workspace:

1. Know Where and How Google Stores Your Data

  • Google stores your files in customized servers in secure data centers.
  • Your data is automatically distributed across multiple regions, guaranteeing redundancy and availability.

2. Control Data Retention

  • Google retains your Workspace data until you or an admin deletes it.
  • Use Google Vault to manage retention policies and set custom retention rules for emails and files.
  • Regularly review and clean up unnecessary stored data to reduce security risks.

3. Secure Your Stored Data

  • Enable encryption for sensitive files in Google Drive.
  • Restrict who can view, edit, and share stored documents by implementing access controls.
  • Monitor data access logs to detect unauthorized access.

How Does Google Workspace Classify Your Data?

Google’s built-in classification tools are an acceptable starting point. However, they fall short of securing and classifying all unstructured data across complex cloud environments. This is because today's cloud attack surface expands across multiple providers, making security more complex than ever before. Consequently, Google's myopic classification often snowballs into bigger security problems, as data moves. Because of this evolving attack surface across multi-cloud environments, risk-ridden shadow data and unstructured data fester in Google Workspace apps. 

The Issue of Unstructured Data

It’s important to remember that most enterprise data is unstructured. Unstructured data refers to data that isn’t stored in standardized or easily manageable formats. In Google Workspace, this could be data in a Gmail draft, multimedia files in Google Drive, or other informal exchanges of sensitive information between Workspace apps. 

For years, unstructured data has been a nightmare for businesses to map, manage, and secure. Unstructured document stores and employee GDrives are hot zones for data risks. Native Google Drive data classification capabilities can be a useful source of metadata to support a more comprehensive external data classification solution. A cloud-native DSP solution can map, classify, and organize sensitive data, including PHI, PCI, and business secrets, across both Google Workspace and cloud platforms that Google's built-in capabilities do not cover, like AWS and S3.

How Does Google Workspace Protect Your Data?

Like its built-in classification mechanisms, Google's baseline security features, such as encryption and access controls, are good for simple use cases but aren't capable enough to fully protect complex environments. 

For both the classification and security of unstructured data, Google’s native tools may not suffice. A robust data loss prevention (DLP) solution should ideally do the trick for unstructured data. However, Google Workspace DLP alone and other protection measures (formerly referred to as G Suite data protection) are unlikely to provide holistic data security, especially in dynamic cloud environments.

Google Native Tool Challenges

Google’s basic protection measures don't tackle the full spectrum of critical Google Workspace data risks because they can't permeate unstructured documents, where sensitive data may reside in various protected states.

For example, an employee's personal Google Drive can potentially house exposed and exploitable sensitive data that can slip through Google's built-in security mechanisms. It’s also important to remember that Google Workspace data loss prevention capabilities do nothing to protect critical enterprise data hosted in other cloud platforms. 

Ultimately, while Google provides some security controls, they alone don’t offer the level of protection that today’s complex cloud environments demand. To close these gaps, businesses must look to complement Google’s built-in capabilities and invest in robust data security solutions.

Only a highly integrable data security tool with advanced AI and ML capabilities can protect unstructured data across Google Workspace’s diverse suite of apps, and further, across the entire enterprise data estate. This has become mandatory since multi-cloud architectures are the norm today.

A Robust Data Security Platform: The Key to Holistic Google Workspace Data Protection 

The speed, complexity, and rapid evolution of multi-cloud and hybrid cloud environments demand more advanced data security capabilities than Google Workspace’s native storage, classification, and protection features provide. 

It is becoming increasingly difficult to mitigate the risks associated with sensitive data.

To successfully remediate these risks, businesses urgently need robust data security posture management (DSPM) and data detection and response (DDR) solutions - preferably all in one platform. There's simply no other way to guarantee comprehensive data protection across Google Workspace. Furthermore, as mentioned earlier, most businesses don't exclusively use Google platforms. They often mix and match services from cloud providers like Google, Azure, and AWS.

In other words, besides limited data classification and protection, Google's built-in capabilities won't be able to extend into other branches of an enterprise's multi-cloud architecture. And having siloed data security tools for each of these cloud platforms increases costs and further complicates administration that can lead to critical coverage gaps. That's why the optimal solution is a holistic platform that can fill the gaps in Google's existing capabilities to provide unified data classification, security, and coverage across all other cloud platforms.

Sentra: The Ultimate Cloud-Agnostic Data Protection and Classification Solution 

To truly secure sensitive data across Google Workspace and beyond, enterprises need a cloud-native data security platform. That’s where Sentra comes in. It hands you enterprise-scale data protection by seamlessly integrating powerful capabilities like data discovery and classification, data security posture management (DSPM), data access governance (DAG), and data detection and response (DDR) into an all-in-one, easy-to-use platform.

By combining rule-based and large language model (LLM)-based classification, Sentra ensures accurate and scalable data security across Workspace apps like Google Drive—as well as data contained in apps from other cloud providers. This is crucial for any enterprise that hosts its data across disparate cloud platforms, not just Workspace. To classify unstructured data across these platforms, Sentra leverages supervised AI training models like BERT. It also uses zero-shot classification techniques to zero in on and accurately classify unstructured data. 

Sentra is particularly useful for anyone asking business-, industry-, or geography-specific data security questions such as “Does Google Workspace have HIPAA compliance frameworks?” and “Is my organization's use of Google Workspace GDPR-compliant?” The short answer to these questions: Integrate Sentra with your Google Workspace apps and you will see. 

Boost Your Google Workspace Data Protection with Sentra

By integrating Sentra with Google Workspace, companies can leverage AI-driven insights to distinguish employee data from customer data, ensuring a clearer understanding of their information landscape. Sentra also identifies customer-specific data types, such as personally identifiable information (PII), protected health information (PHI), product IDs, private codes, and localization requirements. Additionally, it detects toxic data combinations that may pose security risks.

Beyond insights, Sentra provides robust data protection through comprehensive inventorying and classification of unstructured data. It helps organizations right-size permissions, expose shadow data, and implement real-time detection of sensitive data exposure, security breaches, and suspicious activity, ensuring a proactive approach to data security.

No matter where your unstructured data resides, whether in Google Drive or any other cloud service, Sentra ensures it is accurately identified, classified, and protected with over 95% precision.

If you’re ready to take control of your data security, book a demo to discover how Sentra’s AI-driven protection secures your most valuable information across Google Workspace and beyond.

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Meni is an experienced product manager and the former founder of Pixibots (A mobile applications studio). In the past 15 years, he gained expertise in various industries such as: e-commerce, cloud management, dev-tools, mobile games, and more. He is passionate about delivering high quality technical products, that are intuitive and easy to use.

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Yogev Wallach
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August 11, 2025
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How to Secure Regulated Data in Microsoft 365 Copilot

How to Secure Regulated Data in Microsoft 365 Copilot

Microsoft 365 Copilot is a game-changer, embedding generative AI directly into your favorite tools like Word, Outlook, and Teams, and giving productivity a huge boost. But for governance, risk, and compliance (GRC) officers and CISOs, this exciting new innovation also brings new questions about governing sensitive data.

So, how can your organization truly harness Copilot safely without risking compliance? What are Microsoft 365 Copilot security best practices?

Frameworks like NIST’s AI Risk Management and the EU AI Act offer broad guidance, but they don't prescribe exact controls. At Sentra, we recommend a practical approach: treat Copilot as a sensitive data store capable of serving up data (including highly sensitive, regulated information).

This means applying rigorous data security measures to maintain compliance. Specifically, you'll need to know precisely what data Copilot can access, secure it, clearly map access, and continuously monitor your overall data security posture.

We tackle Copilot security through two critical DSPM concepts: Sanitization and Governance.

1. Sanitization: Minimize Unnecessary Data Exposure

Think of Copilot as an incredibly powerful search engine. It can potentially surface sensitive data hidden across countless repositories. To prevent unintended leaks, your crucial first step is to minimize the amount of sensitive data Copilot can access.

Address Shadow Data and Oversharing

It's common for organizations to have sensitive data lurking in overlooked locations or within overshared files. Copilot's incredible search capabilities can suddenly bring these vulnerabilities to light. Imagine a confidential HR spreadsheet, accidentally shared too broadly, now easily summarized by Copilot for anyone who asks.

The solution? Conduct thorough data housekeeping. This means identifying, archiving, or deleting redundant, outdated, or improperly shared information. Crucially, enforce least privilege access by actively auditing and tightening permissions – ensuring only essential identities have access to sensitive content.

How Sentra Helps

Sentra's DSPM solution leverages advanced AI technologies (like OCR, NER, and embeddings) to automatically discover and classify sensitive data across your entire Microsoft 365 environment. Our intuitive dashboards quickly highlight redundant files, shadow data, and overexposed folders. What's more, we meticulously map access at the identity level, clearly showing which users can access what specific sensitive data – enabling rapid remediation.

For example, in the screenshot below, you'll see a detailed view of an identity (Jacob Simmons) within our system. This includes a concise summary of the sensitive data classes they can access, alongside a complete list of accessible data stores and data assets.

sentra dspm identity access

2. Governance: Control AI Output to Prevent Data Leakage

Even after thorough sanitization, some sensitive data must remain accessible within your environment. This is where robust governance comes in, ensuring that Copilot's output never becomes an unintentional vehicle for sensitive data leakage.

Why Output Governance Matters

Without proper controls, Copilot could inadvertently include sensitive details in its generated content or responses. This risk could lead to unauthorized sharing, unchecked sensitive data sprawl, or severe regulatory breaches. The recent EchoLeak vulnerability, for instance, starkly demonstrated how attackers might exploit AI-generated outputs to silently leak critical information.

Leveraging DLP and Sensitivity Labels

Microsoft 365’s Purview Information Protection and DLP policies are powerful tools that allow organizations to control what Copilot can output. Properly labeled sensitive data, such as documents marked “Confidential – Financial,” prompt Copilot to restrict content output, providing users only with references or links rather than sensitive details.

Sentra’s Governance Capabilities

Sentra automatically classifies your data and intelligently applies MPIP sensitivity labels, directly powering Copilot’s critical DLP policies. Our platform integrates seamlessly with Microsoft Purview, ensuring sensitive files are accurately labeled based on flexible, custom business logic. This guarantees that Copilot's outputs remain fully compliant with your active DLP policies.

Below is an example of Sentra’s MPIP label automation in action, showing how we place sensitivity labels on data assets that contain Facebook profile URLs and credit card numbers belonging to EU citizens, which were modified in the past year:

Additionally, our continuous monitoring and real-time alerts empower organizations to immediately address policy violations – for instance, sensitive data with missing or incorrect MPIP labels – helping you maintain audit readiness and seamless compliance alignment.

sentra mpip label automation sensitive data microsoft purview information protection automation

A Data-Centric Security Approach to AI Adoption

By strategically combining robust sanitization and strong governance, you ensure your regulated data remains secure while enabling safe and compliant Copilot adoption across your organization. This approach aligns directly with the core principles outlined by NIST and the EU AI Act, effectively translating high-level compliance guidance into actionable, practical controls.

At Sentra, our mission is clear: to empower secure AI innovation through comprehensive data visibility and truly automated compliance. Our cutting-edge solutions provide the transparency and granular control you need to confidently embrace Copilot’s powerful capabilities, all without risking costly compliance violations.

Next Steps

Adopting Microsoft 365 Copilot securely doesn’t have to be complicated. By leveraging Sentra’s comprehensive DSPM solutions, your organization can create a secure environment where Copilot can safely enhance productivity without ever exposing your regulated data.


Ready to take control? Contact a Sentra expert today to learn more about seamlessly securing your sensitive data and confidently deploying Microsoft 365 Copilot.

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How Automated Remediation Enables Proactive Data Protection at Scale

How Automated Remediation Enables Proactive Data Protection at Scale

Scaling Automated Data Security in Cloud and AI Environments

Modern cloud and AI environments move faster than human response. By the time a manual workflow catches up, sensitive data may already be at risk. Organizations need automated remediation to reduce response time, enforce policy at scale, and safeguard sensitive data the moment it becomes exposed. Comprehensive data discovery and accurate data classification are foundational to this effort. Without knowing what data exists and how it's handled, automation can't succeed.

Sentra’s cloud-native Data Security Platform (DSP) delivers precisely that. With built-in, context-aware automation, data discovery, and classification, Sentra empowers security teams to shift from reactive alerting to proactive defense. From discovery to remediation, every step is designed for precision, speed, and seamless integration into your existing security stack. precisely that. With built-in, context-aware automation, Sentra empowers security teams to shift from reactive alerting to proactive defense. From discovery to remediation, every step is designed for precision, speed, and seamless integration into your existing security stack.

Automated Remediation: Turning Data Risk Into Action

Sentra doesn't just detect risk, it acts. At the core of its value is its ability to execute automated remediation through native integrations and a powerful API-first architecture. This lets organizations immediately address data risks without waiting for manual intervention.

Key Use Cases for Automated Data Remediation

Sensitive Data Tagging & Classification Automation

Sentra accurately classifies and tags sensitive data across environments like Microsoft 365, Amazon S3, Azure, and Google Cloud Platform. Its Automation Rules Page enables dynamic labels based on data type and context, empowering downstream tools to apply precise protections.

Sensitive Data Tagging and Classification Automation in Microsoft Purview

Automated Access Revocation & Insider Risk Mitigation

Sentra identifies excessive or inappropriate access and revokes it in real time. With integrations into IAM and CNAPP tools, it enforces least-privilege access. Advanced use cases include Just-In-Time (JIT) access via SOAR tools like Tines or Torq.

Enforced Data Encryption & Masking Automation

Sentra ensures sensitive data is encrypted and masked through integrations with Microsoft Purview, Snowflake DDM, and others. It can remediate misclassified or exposed data and apply the appropriate controls, reducing exposure and improving compliance.

Integrated Remediation Workflow Automation

Sentra streamlines incident response by triggering alerts and tickets in ServiceNow, Jira, and Splunk. Context-rich events accelerate triage and support policy-driven automated remediation workflows.

Architecture Built for Scalable Security Automation

Cloud & AI Data Visibility with Actionable Remediation

Sentra provides visibility across AWS, Azure, GCP, and M365 while minimizing data movement. It surfaces actionable guidance, such as missing logging or improper configurations, for immediate remediation.

Dynamic Policy Enforcement via Tagging

Sentra’s tagging flows directly into cloud-native services and DLP platforms, powering dynamic, context-aware policy enforcement.

API-First Architecture for Security Automation

With a REST API-first design, Sentra integrates seamlessly with security stacks and enables full customization of workflows, dashboards, and automation pipelines.

Why Sentra for Automated Remediation?

Sentra offers a unified platform for security teams that need visibility, precision, and automation at scale. Its advantages include:

  • No agents or connectors required
  • High-accuracy data classification for confident automation
  • Deep integration with leading security and IT platforms
  • Context-rich tagging to drive intelligent enforcement
  • Built-in data discovery that powers proactive policy decisions
  • OpenAPI interface for tailored remediation workflows

These capabilities are particularly valuable for CISOs, Heads of Data Security, and AI Security teams tasked with securing sensitive data in complex, distributed environments. 

Automate Data Remediation and Strengthen Cloud Security

Today’s cloud and AI environments demand more than visibility, they require decisive, automated action. Security leaders can no longer afford to rely on manual processes when sensitive data is constantly in motion.

Sentra delivers the speed, precision, and context required to protect what matters most. By embedding automated remediation into core security workflows, organizations can eliminate blind spots, respond instantly to risk, and ensure compliance at scale.

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How Sentra is Redefining Data Security at Black Hat 2025

How Sentra is Redefining Data Security at Black Hat 2025

As we move deeper into 2025, the cybersecurity landscape is experiencing a profound shift. AI-driven threats are becoming more sophisticated, cloud misconfigurations remain a persistent risk, and data breaches continue to grow in scale and cost.

In this rapidly evolving environment, traditional security approaches are no longer enough. At Black Hat USA 2025, Sentra will demonstrate how security teams can stay ahead of the curve through data-centric strategies that focus on visibility, risk reduction, and real-time response. Join us on August 4-8 at the Mandalay Bay Convention Center in Las Vegas to learn how Sentra’s platform is reshaping the future of cloud data security.

Understanding the Stakes: 2024’s Security Trends

Recent industry data underscores the urgency facing security leaders. Ransomware accounted for 35% of all cyberattacks in 2024 - an 84% increase over the prior year. Misconfigurations continue to be a leading cause of cloud incidents, contributing to nearly a quarter of security events. Phishing remains the most common vector for credential theft, and the use of AI by attackers has moved from experimental to mainstream.

These trends point to a critical shift: attackers are no longer just targeting infrastructure or endpoints. They are going straight for the data.

Why Data-Centric Security Must Be the Focus in 2025

The acceleration of multi-cloud adoption has introduced significant complexity. Sensitive data now resides across AWS, Azure, GCP, and SaaS platforms like Snowflake and Databricks. However, most organizations still struggle with foundational visibility - not knowing where all their sensitive data lives, who has access to it, or how it is being used.

Sentra’s approach to Data Security Posture Management (DSPM) is built to solve this problem. Our platform enables security teams to continuously discover, identify, classify, and secure sensitive data across their cloud environments, and to do so in real time, without agents or manual tagging.

Sentra at Black Hat USA 2025: What to Expect

At this year’s conference, Sentra will be showcasing how our DSPM and Data Detection and Response (DDR) capabilities help organizations proactively defend their data against evolving threats. Our live demonstrations will highlight how we uncover shadow data across hybrid and multi-cloud environments, detect abnormal access patterns indicating insider threats, and automate compliance mapping for frameworks such as GDPR, HIPAA, PCI-DSS, and SOX. Attendees will also gain visibility into how our platform enables data-aware threat detection that goes beyond traditional SIEM tools.

In addition to product walkthroughs, we’ll be sharing real-world success stories from our customers - including a fintech company that reduced its cloud data risk by 60% in under a month, and a global healthtech provider that cut its audit prep time from three weeks to just two days using Sentra’s automated controls.

Exclusive Experiences for Security Leaders

Beyond the show floor, Sentra will be hosting a VIP Security Leaders Dinner on August 5 - an invitation-only evening of strategic conversations with CISOs, security architects, and data governance leaders. The event will feature roundtable discussions on 2025’s biggest cloud data security challenges and emerging best practices.

For those looking for deeper engagement, we’re also offering one-on-one strategy sessions with our experts. These personalized consultations will focus on helping security leaders evaluate their current DSPM posture, identify key areas of risk, and map out a tailored approach to implementing Sentra’s platform within their environment.

Why Security Teams Choose Sentra

Sentra has emerged as a trusted partner for organizations tackling the challenges of modern data security. We were named a "Customers’ Choice" in the Gartner Peer Insights Voice of the Customer report for DSPM, with a 98% recommendation rate and an average rating of 4.9 out of 5. GigaOm also recognized Sentra as a Leader in its 2024 Radar reports for both DSPM and Data Security Platforms.

More importantly, Sentra is helping real organizations address the realities of cloud-native risk. As security perimeters dissolve and sensitive data becomes more distributed, our platform provides the context, automation, and visibility needed to protect it.

Meet Sentra at Booth 4408

Black Hat USA 2025 offers a critical opportunity for security leaders to re-evaluate their strategies in the face of AI-powered attacks, rising cloud complexity, and increasing regulatory pressure. Whether you are just starting to explore DSPM or are looking to enhance your existing security investments, Sentra’s team will be available for live demos, expert guidance, and strategic insights throughout the event.

Visit us at Booth 4408 to see firsthand how Sentra can help your organization secure what matters most - your data.

Register or Book a Session

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