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Anthropic warns infostealer malware is hijacking Claude sessions to drain usage

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

Anthropic has issued a warning regarding infostealer malware targeting session tokens to hijack Claude AI accounts. Attackers are leveraging malware variants like Lumma Stealer and Meduza to exfiltrate browser cookies, allowing them to bypass multi-factor authentication and access user sessions dir…

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  1. 2026-09-01 05:19 · DEV Community — AI
    Anthropic warns infostealer malware is hijacking Claude sessions to drain usage

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