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:
- Fortinet Flaws Exploited by Qilin Ransomware
June 8, 2025
Fortinet was recently found to have certain vulnerabilities that hackers like the Qilin group exploited. Here’s how they manipulated these weaknesses: Misconfigurations in security appliances provided a direct entry point for Qilin.Outdated Software: Failure to update Fortinet software allowed the ransomware to exploit known vulnerabilities. Qilin also employs social engineering tactics to gain unauthorized access: Phishing Attacks: Targeting employees ...
- GoldenEye Dog(APT-Q-27) gang’s recent use of “Silver Fox” Trojan stealing activities
June 6, 2025
GoldenEyeDog (tracked internally as APT-Q-27 by Qi’anxin) is a hacking group targeting people involved in gaming and dog-pushing in Southeast Asia, as well as the overseas Chinese community, with a range of business activities including remote control, mining, DDoS attacks, etc. It is related to a larger attack group tracked by Qi’anxin, the Miuuti Group. The ...
- Analysis of the latest Mirai wave exploiting TBK DVR devices with CVE-2024-3721
June 6, 2025
The abuse of known security flaws to deploy bots on vulnerable systems is a widely recognized problem. Many automated bots constantly search the web for known vulnerabilities in servers and devices connected to the internet, especially those running popular services. These bots often carry Remote Code Execution (RCE) exploits targeting HTTP services, allowing attackers to embed ...
- Texas: Drivers’ data compromised in TxDOT data breach of nearly 300,000 crash reports
June 6, 2025
The Texas Department of Transportation said it is reaching out to Texans whose personal data was compromised during a data breach that led to the improper download of nearly 300,000 crash reports. Personal data included in crash reports includes: full names, mailing and/or physical addresses, driver license numbers, license plate numbers, car insurance policy numbers and ...
- Cisco Releases Security Advisory Affecting Cisco Identity Service Engine
June 5, 2025
Cisco has released software updates for its Identity Service Engine (ISE). The updates address a critical severity vulnerability in the ISE product. Cisco Identity Services Engine (ISE) is a context-aware policy service to control access and threats across wired, wireless, and VPN networks. CVE-2025-20286 has a CVSSv3 score of 9.9 and is a “use of hard-coded ...
- Ransomware hiding in fake AI, business tools
June 5, 2025
Artificial intelligence (AI) and small business tools are being abused as smokescreens to hit unsuspecting victims with ransomware. In the masquerade campaigns discovered by Cisco Talos, cybercriminals hid malware behind software and install packages that mimicked the websites or names of the lead monetization service Nova Leads, the enormously popular Chat GPT, and an AI-empowered video ...