All Resources
In this article:
minus iconplus icon
Share the Blog

Spooky Stories of Data Breaches

October 28, 2024
3
Min Read
Data Security

As Halloween approaches, it’s the perfect time to dive into some of the scariest data breaches of 2024. Just like monsters hiding in haunted houses, cyber threats quietly move through the digital world, waiting to target vulnerable organizations.

The financial impact of cyberattacks is immense. Cybersecurity Ventures estimates global cybercrime will reach $9.5 trillion in 2024 and $10.5 trillion by 2025. Ransomware, the top threat, is projected to cause damages from $42 billion in 2024 to $265 billion by 2031.

If those numbers didn’t scare you, the 2024 Verizon Data Breach Investigations Report highlights that out of 30,458 cyber incidents, 10,626 were confirmed data breaches, with one-third involving ransomware or extortion. Ransomware has been the top threat in 92% of industries and, along with phishing, malware, and DDoS attacks, has caused nearly two-thirds of data breaches in the past three years.

Let's explore some of the most spine-tingling breaches of 2024 and uncover how they could have been avoided.

Major Data Breaches That Shook the Digital World

The Dark Secrets of National Public Data

The latest National Public Data breach is staggering, just this summer, a hacking group claims to have stolen 2.7 billion personal records, potentially affecting nearly everyone in the United States, Canada, and the United Kingdom. This includes American Social Security numbers. They published portions of the stolen data on the dark web, and while experts are still analyzing how accurate and complete the information is (there are only about half a billion people between the US, Canada, and UK), it's likely that most, if not all, social security numbers have been compromised.

The Haunting of AT&T

AT&T faced a nightmare when hackers breached their systems, exposing the personal data of 7.6 million current and 65.4 million former customers. The stolen data, including sensitive information like Social Security numbers and account details, surfaced on the dark web in March 2024.

Change Healthcare Faces a Chilling Breach

In February 2024, Change Healthcare fell victim to a massive ransomware attack that exposed the personal information of millions of individuals, with 145 million records exposed. This breach, one of the largest in healthcare history, compromised names, addresses, Social Security numbers, medical records, and other sensitive data. The incident had far-reaching effects on patients, healthcare providers, and insurance companies, prompting many in the healthcare industry to reevaluate their security strategies.

The Nightmare of Ticketmaster

Ticketmaster faced a horror of epic proportions when hackers breached their systems, compromising 560 million customer records. This data breach included sensitive details such as payment information, order history, and personal identifiers. The leaked data, offered for sale online, put millions at risk and led to potential federal legal action against their parent company, Live Nation.

How Can Organizations Prevent Data Breaches: Proactive Steps

To mitigate the risk of data breaches, organizations should take proactive steps. 

  • Regularly monitor accounts and credit reports for unusual activity.
  • Strengthen access controls by minimizing over-privileged users.
  • Review permissions and encrypt critical data to protect it both at rest and in transit. 
  • Invest in real-time threat detection tools and conduct regular security audits to help identify vulnerabilities and respond quickly to emerging threats.
  • Implement Data Security Posture Management (DSPM) to detect shadow data and ensure proper data hygiene (i.e. encryption, masking, activity logging, etc.) 

These measures, including multi-factor authentication and routine compliance audits, can significantly reduce the risk of breaches and better protect sensitive information.

Best Practices to Secure Your Data 

Enough of the scary news, how do we avoid these nightmares?

Organizations can defend themselves starting with Data Security Posture Management (DSPM) tools. By finding and eliminating shadow data, identifying over-privileged users, and monitoring data movement, companies can significantly reduce their risk of facing these digital threats.

Looking at these major breaches, it's clear the stakes have never been higher. Each incident highlights the vulnerabilities we face and the urgent need for strong protection strategies. Learning from these missteps underscores the importance of prioritizing data security.

As technology continues to evolve and regulations grow stricter, it’s vital for businesses to adopt a proactive approach to safeguarding their data. Implementing proper data security measures can play a critical role in protecting sensitive information and minimizing the risk of future breaches.

Sentra: The Data Security Platform for the AI era

Sentra enables security teams to gain full visibility and control of data, as well as protect against sensitive data breaches across the entire public cloud stack. By discovering where all the sensitive data is, how it's secured, and where it's going, Sentra reduces the 'data attack surface', the sum of all places where sensitive or critical data is stored or traveling to.Sentra’s cloud-native design combines powerful Data Discovery and Classification, DSPM, DAG, and DDR capabilities into a complete Data Security Platform (DSP). With this, Sentra customers achieve enterprise-scale data protection and answer the important questions about their data. Sentra DSP provides a crucial layer of protection distinct from other infrastructure-dependent layers. It allows organizations to scale data protection across multi-clouds to meet enterprise demands and keep pace with ever-evolving business needs. And it does so very efficiently - without creating undue burdens on the personnel who must manage it.

Haim has extensive experience working with large organizations interested in enhancing their data security in the cloud.

Subscribe

Latest Blog Posts

Yair Cohen
Yair Cohen
David Stuart
David Stuart
April 15, 2026
3
Min Read
Data Sprawl

Fiverr Data Breach: Beyond Misconfigured Buckets and the Data Sprawl That Made It Inevitable

Fiverr Data Breach: Beyond Misconfigured Buckets and the Data Sprawl That Made It Inevitable

Fiverr’s recent data breach/data exposure left tax forms, IDs, contracts, and even credentials publicly accessible and indexed by Google via misconfigured Cloudinary URLs.

This post explains what happened, why data sprawl across third-party services made it inevitable, and how to prevent the next Fiverr-style leak.

The Fiverr data breach is a textbook case of sensitive data sprawl and misconfigured third‑party infrastructure: highly sensitive documents (including tax returns, IDs, health records, and even admin credentials) were stored on Cloudinary behind unauthenticated, non‑expiring URLs, then surfaced via public HTML so Google could index them—remaining accessible for weeks after initial disclosure and hours after public reporting. This isn’t a zero‑day exploit; it’s a failure to understand where regulated data lives, how it rapidly proliferates and is shared across services, and whether controls like signed URLs, authentication, and proper indexing rules are actually in place.

In practical terms, what happened in the Fiverr data breach?

– Sensitive documents (tax returns, IDs, contracts, even credentials) were stored on Cloudinary behind unauthenticated, non-expiring URLs.

– Some of those URLs were linked from public HTML, allowing Google and other search engines to index them.

– As a result, private Fiverr user data became publicly searchable, long before regulators or affected users were notified.

What the Fiverr Data Breach Reveals About Third-Party Data Sprawl

What makes this kind of data exposure - like the Fiverr data leak - so damaging is that it collapses the boundary between “internal work product” and “public web content.” The same files that power everyday workflows—tax filings, medical notes, penetration test reports, admin credentials—suddenly become discoverable to anyone with a search engine, long before regulators or affected users even know there’s a problem. As enterprises lean on third‑party processors, media platforms, and SaaS for collaboration, the real risk isn’t a single misconfigured bucket; it’s the absence of continuous visibility into where sensitive data actually resides and who—human or machine—can reach it.

Sentra is built to restore that visibility and hygiene baseline across the entire data estate, including cloud storage, SaaS platforms, AI data lakes, and media services like the one at the center of this incident. By running discovery and classification in‑environment—without copying customer data out—Sentra builds a live inventory of sensitive assets, from tax forms and IDs to health and financial records, even in unstructured PDFs and images brought into scope via OCR and transcription. On top of that, Sentra continuously identifies redundant, obsolete, and toxic (ROT) data, so organizations can eliminate unnecessary copies that amplify the blast radius when something does go wrong, and set enforceable policies like “no GLBA‑covered data on unauthenticated public endpoints” before the next Cloudinary‑style exposure ever materializes.

If you’re asking “How do we avoid a Fiverr-style data breach on our own SaaS and media stack?”, the starting point is continuous visibility into where sensitive data lives, how it moves into services like Cloudinary, and who or what (including AI agents) can access it.

How to Prevent a Fiverr-Style Data Leak Across SaaS, Storage, and Media Services

Where traditional controls stop at the perimeter, Sentra ties data to identities and access paths, including AI agents, copilots, and service principals. Lineage‑driven maps show how data moves—from a storage bucket into a search index, from a document library into a media processor—so entitlements can follow data automatically and public or over‑privileged links can be revoked in a targeted way, rather than taking an entire service offline. On that foundation, Sentra orchestrates automated actions and remediation: quarantining exposed files, tombstoning toxic copies, removing public links, and routing rich, contextual tickets to owners when human judgment is required—all through existing tools like DLP, IAM, ServiceNow, Jira, Slack, and SOAR instead of standing up a parallel enforcement stack.

Doing this at “Fiverr scale” requires more than point tools; it demands a platform that is accurate, scalable, and cost‑efficient enough to run continuously and scale across multi-hundred petabyte environments. Sentra’s in‑environment architecture and small‑model approach have already scanned 8–9 petabytes in under 4–5 days at 95–98% accuracy—an order‑of‑magnitude faster and cheaper than extraction‑based alternatives—while keeping customer data inside their own accounts. That efficiency means enterprises can maintain continuous scanning, labeling, and remediation across hundreds of petabytes and multiple clouds without turning governance into a budget‑breaking project, and can generate audit‑grade evidence that sensitive data was governed properly over time—not just at the last assessment.

Incidents like the Fiverr data breach are a warning shot for the AI era, where copilots, internal agents, and search experiences will happily surface whatever the underlying permissions and data quality allow. As AI adoption accelerates, the only sustainable defense is a baseline of automated, continuous data protection: accurate classification, durable hygiene, identity‑aware access, automated remediation, and economically viable, always‑on governance that keeps pace with rapidly expanding and evolving data estates. You can’t secure AI—or avoid the next “public and searchable” headline—without first understanding and continuously governing the data that AI and its surrounding services can see. As AI pushes boundaries (and challenges security teams!), there is no time like now to ensure data remains protected.


Fiverr data breach FAQ

  • Was my Fiverr data exposed in the breach?
    Fiverr and independent researchers have confirmed that some user documents—including tax forms, IDs, invoices, and credentials—were publicly accessible and indexed by Google via misconfigured Cloudinary URLs. Whether your specific files were exposed depends on what you shared and how Fiverr stored it, but the safest assumption is that any sensitive document shared on the platform may have been at risk.

  • What made the Fiverr data breach possible?
    The root cause wasn’t a zero-day exploit; it was data sprawl across third-party infrastructure plus weak controls: public, non-expiring Cloudinary URLs, public HTML linking to those URLs, and no continuous visibility into where regulated data lived or who could reach it.

  • How can enterprises prevent similar leaks?
    By continuously discovering and classifying sensitive data across cloud storage, SaaS, and media services; cleaning up ROT; enforcing policies like “no GLBA-covered data on unauthenticated public endpoints”; and tying access to identities so public links and over-privileged routes can be revoked automatically. 

Read more about the Fiverr Data Breach

Detailed news coverage of the Fiverr data breach and Cloudinary misconfiguration (Cybernews)

Independent analysis of the Fiverr data exposure via public Cloudinary URLs (CyberInsider)

Read More
Ariel Rimon
Ariel Rimon
March 30, 2026
3
Min Read

Web Archive Scanning: WARC, ARC, and the Forgotten PII in Your Compliance Crawls

Web Archive Scanning: WARC, ARC, and the Forgotten PII in Your Compliance Crawls

One of the most interesting blind spots I see in mature security programs isn’t a database or a SaaS app. It’s web archives.

If you’re in financial services, you may be required to archive every version of your public website for years. Legal teams preserve web content under hold. Marketing and product teams crawl competitors for competitive intel. Security teams capture phishing pages and breach sites for analysis. All of that activity produces WARC and ARC files - standard formats for storing captured web content.

Now ask yourself: what’s in those archives?

Where Web Archives Come From and Why They Get Ignored

In most enterprises, web archives are created in predictable ways, but rarely treated as data stores that need to be actively managed. Compliance teams crawl and preserve marketing pages, disclosures, and rate sheets to meet record-keeping requirements. Legal teams snapshot websites for e-discovery and retain those captures for years. Product and growth teams scrape competitor sites, pricing pages, and documentation, while security teams collect phishing kits, fake login pages, and breach sites for analysis.

All of this content ends up stored as WARC or ARC files in object storage or file shares. Once the initial crawl is complete and the compliance requirement is satisfied, these archives are typically dumped into an S3 bucket or on-prem share, referenced in a ticket or spreadsheet, and then quietly forgotten.

That’s where the risk begins. What started as a compliance or research activity turns into a growing, unmonitored data store - one that may contain sensitive and regulated information, but sits outside the scope of most security and privacy programs.

What’s Really Inside a WARC or ARC File?

A single WARC from a routine compliance crawl of your own site can contain thousands of pages. Many of those pages will have:

  • Customer names and emails
  • Account IDs and usernames
  • Phone numbers and mailing addresses
  • Perhaps even partial transaction details in page content, forms, or query strings

If you’re scraping external sites, those files can hold third‑party PII: profiles, contact details, and public record data. Threat intel archives may include:

  • Captured credentials from phishing kits
  • Breach data and exposed account information
  • Screenshots or HTML copies of login pages and portals

Meanwhile, the archives themselves grow quietly in S3 buckets and on‑prem file shares, rarely revisited and almost never scanned with the same rigor you apply to “primary” systems.

From a privacy perspective, this is a real problem. Under GDPR and similar laws, individuals have the right to request access to and deletion of their personal data. If that data lives inside a 3‑year‑old WARC file you can’t even parse, you have no practical way or scalable way to honor that request. Multiply that across years of compliance archiving, legal holds, scraping campaigns, and threat intel crawls, and you’re sitting on terabytes of unmanaged web content containing PII and regulated data.

Why Traditional DLP and Discovery Can’t Handle WARC and ARC

Most traditional DLP (Data Loss Prevention) and data discovery tools were designed for a simpler data landscape, focused on emails, attachments, PDFs, Office documents, and flat text logs or CSV files. When these tools encounter formats like WARC or ARC files, they typically treat them as opaque blobs of data, relying on basic text extraction and regex-based pattern matching to identify sensitive information.

This approach breaks down with web archives. WARC and ARC files are complex container formats that store full HTTP interactions, including requests, responses, headers, and payloads. A single web archive can contain thousands of captured pages and resources: HTML, JavaScript, CSS, JSON APIs, images, and PDFs, often compressed or encoded in ways that require reconstructing the original HTTP responses to interpret correctly.

As a result, legacy DLP tools cannot reliably parse or analyze WARC and ARC files. Instead, they surface only fragmented data such as headers, binary content, or partial HTML, without reconstructing the full user-visible context. This means they miss critical elements like complete web pages, DOM structures, form inputs, query strings, request bodies, and embedded assets where sensitive data such as PII, credentials, or financial information may exist.

The result is a significant compliance and security gap. Web archives stored in WARC and ARC formats often contain regulated data but remain unscanned and unmanaged, creating a persistent blind spot for traditional DLP and DSPM programs.

How Sentra Scans Web Archives at Scale

We built web archive scanning into Sentra to make this tractable.

Sentra’s WarcReader understands both WARC and ARC formats. It:

  • Processes captured HTTP responses, not just headers
  • Extracts the actual HTML page content and associated resources from each record
  • Normalizes those payloads so they can be scanned just like any other web‑delivered content

Once we’ve pulled out the page content and resources, we run them through the same classification engine we apply to your other data stores, looking for:

  • PII (names, emails, addresses, national IDs, phone numbers, etc.)
  • Financial data (account numbers, card numbers, bank details)
  • Healthcare information and PHI indicators
  • Credentials and other secrets
  • Business‑sensitive data (internal IDs, case numbers, etc.)

Because WARC files can be huge, we do all of this in memory, without unpacking archives to disk. That matters for two reasons:

  1. Performance and scale: We can stream through large archives without creating temporary, unmanaged copies.
  2. Security: We avoid writing decrypted or reconstructed content to local disks, which would create new artifacts you now have to protect.

We also handle embedded resources - images, documents, and other files captured as part of the original pages — so you’re not only seeing what was in the HTML but also what was linked or rendered alongside it. Sentra’s existing file parsers and OCR engine can inspect those nested assets for sensitive content just as they would in any other data store.

Bringing Web Archives into Your DSPM Program

Once you can actually see inside web archives, you can bring them into your data security program instead of pretending they’re “just logs.”

With Sentra, teams can:

  • Discover where web archives live across cloud and on‑prem (S3, Azure Blob, GCS, NFS/SMB shares, and more).
  • Classify the captured content for PII, PCI, PHI, credentials, and business‑sensitive information.
  • Assess regulatory exposure from long‑running archiving programs and legal holds that have accumulated unmanaged PII over time.
  • Support DSAR and deletion workflows that touch archived content, so you can respond to GDPR/CCPA requests with an honest inventory that includes historical web captures.
  • Evaluate scraping and threat‑intel collections to identify sensitive data they were never supposed to capture in the first place (for example, credentials, breach records, or third‑party PII).

In practice, this often leads to concrete actions like:

  • Tightening retention policies on specific archive sets
  • Segmenting or encrypting archives that contain regulated data
  • Updating crawler configurations to avoid collecting sensitive content going forward
  • Aligning privacy teams, legal, and security around a shared understanding of what’s actually in years’ worth of WARC/ARC content

Web Archives Are Data Stores - Treat Them That Way

Web archives aren’t just compliance artifacts, they’re data stores, often holding sensitive and regulated information. Yet in most organizations, WARC and ARC files sit outside the scope of DSPM and data discovery, creating a blind spot between what’s stored and what’s actually secured.

Sentra removes that tradeoff. You can keep the archives you’re required to maintain and gain full visibility into the data inside them. By bringing WARC and ARC files into your DSPM program, you extend coverage to web archives and other hard-to-reach data—without changing how you store or manage them.

Want to see what’s hiding in your web archives? Explore how Sentra scans WARC and ARC files and uncovers sensitive data at scale.

<blogcta-big>

Read More
Nikki Ralston
Nikki Ralston
March 29, 2026
3
Min Read

DLP False Positives Are Drowning Your Security Team: How to Cut Noise with DSPM

DLP False Positives Are Drowning Your Security Team: How to Cut Noise with DSPM

Ask any security engineer how they feel about DLP alerts and you’ll usually get the same reaction. They are drowning in them. Over the last decade, DLP has built a reputation for noisy alerts, rigid rules, and confusing dashboards that bury real risk under a mountain of “maybe” events.

Teams roll out endpoint, email, and network DLP, wire in SaaS connectors, and import standard PCI/PII templates. Within weeks, analysts are triaging hundreds of alerts a day, most of which turn out to be benign. Business users complain that normal work is blocked, so policies get carved up with exceptions or quietly disabled. Meanwhile, the most sensitive data quietly spreads into collaboration tools, cloud storage, and AI workflows that DLP never sees.

The problem is that DLP is being asked to do too much on its own: discover sensitive data, understand its business context, and enforce policies in motion, all from a narrow view of each channel. To fix false positives in a durable way, you have to stop treating DLP as the brain of your data security program and give it an actual data-intelligence layer to work with.

That’s the role of modern Data Security Posture Management (DSPM).

Why Traditional DLP Can Be So Noisy

Most DLP engines still lean heavily on pattern matching and static rules. They look for strings that resemble card numbers, social security numbers, or keywords, and they try to infer “sensitive vs. not” from whatever they can see in a single email, file, or HTTP transaction. That approach might have been tolerable when most sensitive data sat in a few on‑prem systems, but it doesn’t scale to multi‑cloud, SaaS, and AI‑driven environments.

In practice, three things tend to go wrong:

First, DLP rarely has full visibility. Sensitive data now lives in cloud data lakes, SaaS apps, shared drives, ticketing systems, and AI training sets. Many of those locations are either out of reach for traditional DLP or only partially covered.

Second, the rules themselves are crude. A nine‑digit number might be a government ID, or it might be an internal ticket number. A CSV export might be an innocuous test file or a real production dump. Without a shared understanding of what the data actually represents, rules fire on look‑alikes and miss real exposures.

Third, each DLP product, the endpoint agent, the email gateway, the CASB, tries to solve classification locally. You end up with inconsistent detections and competing definitions of “sensitive” that don’t match what the business actually cares about. When you add those up, it’s no surprise that false positives consume so much analyst time and so much political capital with the business.

How DSPM Changes the Equation

DSPM was designed to separate what DLP has been trying to do into dedicated layers. Instead of asking DLP to discover, classify, and enforce all at once, DSPM owns discovery and classification, and DLP focuses on enforcement.

A DSPM platform like Sentra connects directly, via APIs and in‑environment scanning, to your cloud, SaaS, and on‑prem data stores. It builds a unified inventory of data, then uses AI‑driven models and domain‑specific logic to decide:

  • What is this object?
  • How sensitive is it?
  • Which regulations or policies apply?
  • Who or what can currently access it?

From there, DSPM applies consistent labels to that data, often using frameworks like Microsoft Purview Information Protection (MPIP) so labels are understood by other tools. Those labels are then pushed into your DLP stack, SSE/CASB, and email and endpoint controls, so every enforcement point is working from the same definition of sensitivity, instead of guessing on the fly.

Once DLP is enforcing on clear labels and context, rather than raw patterns, you no longer need dozens of almost‑duplicate rules per channel. Policies become simpler and more precise, which is what allows teams to realistically drive false positives down by up to half or more.

A Practical Approach to Cutting DLP Noise

If your security team is exhausted by DLP alerts today, you don’t need another round of regex tuning. You need a change in operating model. A pragmatic sequence looks like this.

Start by measuring the problem instead of just reacting to it. Capture how many DLP alerts you see per week, how many of those are ultimately dismissed, and how much analyst time they consume. Pay special attention to the policies and channels that generate the most noise, because that’s where you’ll see the biggest benefit from a DSPM‑driven approach.

Next, work with DSPM to turn your noisiest rules into label‑driven policies. Instead of “block any message that looks like it contains a card number,” express the rule as “block files labeled PCI sent to personal domains” or “quarantine emails carrying PHI labels to unapproved partners.” Once Sentra or another DSPM platform is reliably applying those labels, DLP simply has to enforce on them.

Then, add business context. The same file can be benign in one context and dangerous in another. Combine labels with identity, role, channel, and basic behavior signals like, time of day, destination, volume, etc., so that only genuinely suspicious events result in hard blocks or escalations. A finance export labeled ‘Confidential’ going to an approved auditor should not be treated the same as that export leaving for an unknown Gmail account at midnight.

Finally, create a feedback loop. Allow analysts to flag alerts as false positives or misconfigurations, and give users controlled ways to override with justification in edge cases. Feed that information back into DSPM tuning and DLP policies at a regular cadence, so your classification and rules get closer to how the business actually operates.

Over time, you’ll find that you write fewer DLP rules, not more. The rules you do have are easier to explain to stakeholders. And most importantly, your analysts spend their time on true positives and meaningful insider‑risk investigations, not on the hundredth low‑value alert of the week.

At that point, you haven’t just made DLP tolerable. You’ve turned it into a quiet, reliable enforcement layer sitting on top of a data‑intelligence foundation.

<blogcta-big>

Read More
Expert Data Security Insights Straight to Your Inbox
What Should I Do Now:
1

Get the latest GigaOm DSPM Radar report - see why Sentra was named a Leader and Fast Mover in data security. Download now and stay ahead on securing sensitive data.

2

Sign up for a demo and learn how Sentra’s data security platform can uncover hidden risks, simplify compliance, and safeguard your sensitive data.

3

Follow us on LinkedIn, X (Twitter), and YouTube for actionable expert insights on how to strengthen your data security, build a successful DSPM program, and more!

Before you go...

Get the Gartner Customers' Choice for DSPM Report

Read why 98% of users recommend Sentra.

White Gartner Peer Insights Customers' Choice 2025 badge with laurel leaves inside a speech bubble.