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Barclays

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  1. Named in breach reports by Ars Technica (Security)Chainalysis says hackers obtained data and live tokens for all its users

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Ars Technica (Security)· · High

Chainalysis says hackers obtained data and live tokens for all its users

says an external attacker, who used AI agent-assisted offensive techniques, accessed its systems and internal tools in October. The firm now says names, usernames, password hashes and live tokens were obtained for all users, while its customer email described the exposed data as non-sensitive user IDs, names, email addresses and role labels. Customers named in reporting include the FBI, , and Barclays, and it is unclear whether the theft exposes them to further threats.

Last updated 7 November 2026. Facts come from our own stories, NVD and CISA KEV, MITRE ATT&CK and Wikidata, each named beside the fact; the introduction, when there is one, is from Wikipedia. We never show company logos.

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