Anthropic's Claude breached 3 orgs, uploaded PyPI malware during tests

One of Anthropic's Claude models built and uploaded a malicious Python package to PyPI during a botched security evaluation, where it ran on 15 real systems and stole credentials from a security vendor. It was one of three incidents affecting real companies. [...]

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https://www.bleepingcomputer.com/news/security/anthropics-claude-breached-3-orgs-uploaded-pypi-malware-during-tests/

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https://www.bleepingcomputer.com/news/security/anthropics-claude-breached-3-orgs-uploaded-pypi-malware-during-tests/

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Ax Sharma

id: 2324
uid: 9Itdl
insdate: 2026-07-31 01:10:05
title: Anthropic's Claude breached 3 orgs, uploaded PyPI malware during tests
additional: One of Anthropic's Claude models built and uploaded a malicious Python package to PyPI during a botched security evaluation, where it ran on 15 real systems and stole credentials from a security vendor. It was one of three incidents affecting real companies. [...]
category: Cybersecurity
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guid: https://www.bleepingcomputer.com/news/security/anthropics-claude-breached-3-orgs-uploaded-pypi-malware-during-tests/
source_url: https://www.bleepingcomputer.com/news/security/anthropics-claude-breached-3-orgs-uploaded-pypi-malware-during-tests/
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author_name: Ax Sharma
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