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Anthropic cracks down on hijacked user accounts mining AI tokens

ID: 83f8faf7-c88e-5382-842d-05644a66a47f

STIX ID: report--83f8faf7-c88e-5382-842d-05644a66a47f

Feed Name: The Register (Security)

Threat Score
60/100

Date Published: 2026-08-31

Date Updated: 2026-09-01

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A report describes a wave of commodity infostealer malware (including Vidar, LummaC2, StealC, RedLine, Acreed, and Atomic Stealer) harvesting credentials and session cookies to hijack Anthropic Claude accounts and use victims' paid tokens. Anthropic has been detecting and mitigating abuse by signing affected users out and removing stored payment methods, while victims report infections originating from common lures such as cracked software.

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