Updated: July 30, 2025 – A new report sheds light on the growing threat of data breaches, revealing that more than 141 million sensitive files from over 1,250 security incidents have been compromised.The findings come from the “Anatomy of a Data Breach” report, published by cybersecurity firm Lab 1, which studied the content of leaked files in depth — not just login credentials, but also what was actually inside the stolen files, including crypto keys, sensitive documents, and personal data.
The report examined records collected from ransomware attacks and other types of data leaks. The scale of the breach may not sound shocking when compared to recent leaks of 16 billion usernames and passwords or the discovery of 184 million plain-text passwords online. However, what makes this research stand out is that it exposes the type of information, not just the number of files.
What Makes This Breach Different?
Robin Brattel, CEO of Lab 1, said the team conducted the most detailed analysis ever on the actual contents of breached files. Instead of examining only structured databases or credential lists, the researchers analyzed unstructured data — such as documents, spreadsheets, PDFs, and text files — which traditional reviews often overlook.
These files contained highly sensitive material including:
- Bank statements
- Cryptographic keys (used to secure digital assets like crypto wallets)
- Customer account data
- Private contracts and internal business documents
The researchers compiled the report by collecting forensic data directly from compromised systems, allowing them to examine the stolen files in their original form. This gives the cybersecurity world a rare view into what hackers are really after — and what organizations are leaving vulnerable.
Why It Matters
The real concern isn’t just the number of files but the value of the information inside them. Hackers continue to lower the barrier to cybercrime by using tools like infostealers-as-a-service, which they can rent for as little as $30 per month. These tools allow even inexperienced attackers to extract valuable data with ease, which is why breach numbers are likely to rise.
This research highlights a shift in how we need to think about data protection. Although companies have long focused on protecting usernames and passwords, this analysis shows that hackers now aggressively target unstructured files filled with confidential information.
A Wake-Up Call for Businesses
The findings serve as a warning for companies across all sectors. It’s no longer enough to secure databases and login credentials. Organizations must also take steps to identify and protect sensitive files stored on computers, servers, and cloud services — especially those that contain financial details, encryption keys, or customer information.
Lab 1’s report also aligns with a separate ransomware threat analysis by Zscaler, which shows a rising trend in sophisticated extortion tactics. Together, these findings make it clear that cyberattacks are evolving, and so must the strategies to prevent them.
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