In late March 2026open on a new tab, Anthropic inadvertently released the internal Claude Code source material as part of an npm package that included a large internal source map file. Although the incident stemmed from a simple packaging mistake, threat actors were quick to capitalize on the resulting attention. Only 24 hours after the leak, they were able to create fake GitHub repositories to distribute credential-stealing malware disguised as “leaked” Claude Code downloads.
This incident demonstrates that security compromise is not limited to software vulnerabilities: human factors and organizational control gaps often serve as catalyst for threats and are primary drivers of material impact. In this blog entry, we will talk about our analysis of the threats capitalizing on this incident, the downstream risks of the leaked source code, and the actions organizations should take next.
Read more…
Source: Trend Micro
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- CISA orders feds to patch Oracle Identity Manager zero-day after signs of abuse
November 24, 2025
CISA has ordered US federal agencies to patch against an actively exploited Oracle Identity Manager (OIM) flaw within three weeks – a scramble made more urgent by evidence that attackers may have been abusing the bug months before a fix was released. The flaw, tracked as CVE-2025-61757 and now sitting in CISA’s Known Exploited Vulnerabilities catalog, ...
- CrowdStrike fires ‘suspicious insider’ who passed information to hackers
November 21, 2025
Cybersecurity giant CrowdStrike has confirmed firing a “suspicious insider” last month who allegedly fed information about the company to a notorious hacking group. A hacking collective known as Scattered Lapsus$ Hunters published screenshots late Thursday and Friday morning in a public Telegram channel that allegedly showed insider access to CrowdStrike systems. The screenshots, which TechCrunch has ...
- WhatsApp security flaw lets experts scrape 3.5 billion user numbers
November 21, 2025
WhatsApp users may need to take extra steps to protect their account information following a potentially concerning discovery. A study by researchers at the University of Vienna revealed the app’s contact-discovery system enabled the collection of extensive WhatsApp user data at an unprecedented scale due to insufficient rate-limiting across global endpoints. The researchers were able to ...
- Logitech Confirms Data Breach After Cl0p, Linked to Oracle E-Business Suite Exploits, Takes Responsibility
November 20, 2025
Hardware and software solutions company Logitech has disclosed a data breach that exposed employee, customer, and supplier information. “Logitech International S.A. (“Logitech”) recently experienced a cybersecurity incident relating to the exfiltration of data,” the company stated. Read more… Source: CPO Magazine News Sign up for the Cyber Security Review Newsletter The latest cyber security news and insights delivered right to ...
- Mac users warned about new DigitStealer information stealer
November 19, 2025
This variant comes with advanced detection-evasion techniques and a multi-stage attack chain. Most infostealers go after the same types of data and use similar methods to get it, but DigitStealer is different enough to warrant attention. A few things make it stand out: platform-specific targeting, fileless operation, and anti-analysis techniques. Together, they pose relatively new challenges ...
- Understanding the future of offensive AI in cybersecurity
November 19, 2025
As we step into an era where artificial intelligence (AI) plays an increasingly significant role in cybersecurity, discussions surrounding its offensive capabilities are becoming more prominent. A recent report by Anthropic—a leading AI research lab—has sparked the latest conversation on this topic, with questions raised about their claim that an AI-assisted attack they observed was ...