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:
- GOFFEE continues to attack organizations in Russia
April 10, 2025
GOFFEE is a threat actor that first came to our attention in early 2022. Since then, Kaspersky researchers have observed malicious activities targeting exclusively entities located in the Russian Federation, leveraging spear phishing emails with a malicious attachment. Starting in May 2022 and up until summer of 2023, GOFFEE deployed modified Owowa (malicious IIS module) in ...
- Incomplete NVIDIA Patch to CVE-2024-0132 Exposes AI Infrastructure and Data to Critical Risks
April 10, 2025
In September 2024, NVIDIA released several updates to address a critical vulnerability (CVE-2024-0132) in its NVIDIA Container Toolkit. If exploited, this vulnerability could expose AI infrastructure, data, or sensitive information. With a CVSS v3.1 rating of 9.0, all customers were advised to update their affected software immediately. Further research, however, uncovered that the patch was incomplete. ...
- Password Spray Attacks Taking Advantage of Lax MFA
April 10, 2025
In the first quarter of 2025, Rapid7’s Managed Threat Hunting team observed a significant volume of brute-force password attempts leveraging FastHTTP, a high-performance HTTP server and client library for Go, to automate unauthorized logins via HTTP requests. This rapid volume of credential spraying was primarily designed to discover and compromise accounts not properly secured by multi-factor ...
- Operation Endgame follow-up leads to five detentions and interrogations as well as server takedowns
April 9, 2025
Following the massive botnet takedown codenamed Operation Endgame in May 2024, which shut down the biggest malware droppers, including IcedID, SystemBC, Pikabot, Smokeloader and Bumblebee, law enforcement agencies across North America and Europe dealt another blow to the malware ecosystem in early 2025. In a coordinated series of actions, customers of the Smokeloader pay-per-install botnet, operated ...
- Court document reveals locations of WhatsApp victims targeted by NSO spyware
April 9, 2025
NSO Group’s notorious spyware Pegasus was used to target 1,223 WhatsApp users in 51 different countries during a 2019 hacking campaign, according to a new court document. The document was published on Friday as part of the lawsuit that Meta-owned WhatsApp filed against NSO Group in 2019, accusing the surveillance tech maker of exploiting a ...
- Patch Tuesday – April 2025
April 9, 2025
Microsoft is addressing 121 vulnerabilities this April 2025 Patch Tuesday, which is more than twice as many as last month. Microsoft has evidence of in-the-wild exploitation for just one of the vulnerabilities published today, which is already reflected in CISA KEV. Once again, Microsoft has published zero-day vulnerabilities on Patch Tuesday without evaluating any of them ...