MalwareBleeping Computer
6.8 — HIGH
Anthropic warns infostealer malware is hijacking Claude sessions to drain usage
Anthropic is warning some Claude users that infostealer malware on their PCs has stolen active Claude login sessions, allowing attackers to access accounts and consume their usage. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
Infostealer malware has hijacked Claude sessions, allowing attackers to access accounts and consume usage, with Anthropic identifying Vidar, LummaC2, StealC, RedLine, and Acreed on Windows, along with Atomic Stealer (AMOS) on a small number of Macs.
⚙️Technical Details
Affected Systems
Claude
Attack Vectors
downloadsmalicious apps
💥Impact Assessment
Severity: high
Who Is at Risk
Users of Claude with active login sessions
🛡️Recommended Actions
1Change credentials immediately
2Revoke other sessions to prevent unauthorized access
3Remove malware from the PCs
📦Affected Products
Claude
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