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:
- Attackers target critical FortiSandbox flaws as CISA issues patch order
July 17, 2026
Fortinet admins have two more reasons to clear their calendars after CISA confirmed a pair of critical FortiSandbox bugs are being actively exploited. The two bugs, tracked as CVE-2026-39808 and CVE-2026-25089, both carry CVSS scores of 9.1 and affect FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS. According to Fortinet, they are OS command injection flaws that allow ...
- GoSerpent: a persistent threat evolves with sophisticated data collection and exfiltration
July 16, 2026
In February 2026, Kaspersky discovered a set of malicious activities that had been ongoing since late 2025. These activities involved a RAT module written in Go with proxy capabilities, which served as the main stage of the attack. The attack targeted government and diplomatic entities in Southeast Asia and showed a level of sophistication that ...
- Tech support scam caused massive data breach at Australian airline Qantas
July 16, 2026
Australia’s Privacy Commissioner has revealed a tech support scam was the cause of the massive 2025 data breach at Australian airline Qantas and found the carrier didn’t breach its privacy obligations despite leaking personally identifiable information for 5.7 million customers. The Commissioner reached that conclusion, and a decision not to open a formal privacy probe, in ...
- This fake Apple app can unlock your Mac’s password vault
July 15, 2026
CrashStealer is a new macOS infostealer that masquerades as Apple’s CrashReporter component, uses an Apple‑notarized installer to slip past Gatekeeper, tricks users into handing over their password, and then systematically loots browsers, password managers, crypto wallets, and Keychain secrets before exfiltrating them in AES‑encrypted bundles. Researchers have been following the development of CrashStealer since May 2026. It ...
- New phishing campaign hits LastPass, Bitwarden users
July 15, 2026
Criminals have been found impersonating popular password managers LastPass and Bitwarden online in an attempt to trick users into sharing their login credentials, and thus access to a treasure trove of passwords and other secrets. LastPass recently issued a warning to its customers, raising awareness of the ongoing phishing campaign. However the scam also now seems to ...
- Top AI tools such as OpenClaw and Github Copilot can be hijacked to create new massive botnets
July 15, 2026
Your favorite AI service could be subverted to deploy code that turns your phone or PC into a botnet, according to researchers at Intuit, Technion, and Tel Aviv University. The technique has been given the name HalluSquatting, a portmanteau of adversarial hallucination squatting, and is similar to typosquatting in that it relies on a mistake in ...