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Anthropic Links Claude Session Theft to Infostealer Malware

medsocradar_blogPublished 2026-08-31

<h1>Anthropic Links Claude Session Theft to Infostealer Malware</h1> <p>An affected Claude user has shared a warning from Anthropic stating that infostealer <a href="https://socradar.io/glossary/malware/">malware</a> can steal active Claude login sessions from infected computers. Attackers can reuse these sessions to access accounts and consume available usage without completing the normal sign-in

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://socradar.io/blog/anthropic-claude-sessions-infostealer-malware/