Cathedral claims AI agents breached Anthropic systems in under 12 hours

Published Monday, October 26, 2026 · 9:02 AM EDT

Cybersecurity startup Cathedral says its researchers breached Anthropic's internal systems in under 12 hours using AI agents, the Washington Post reported. The months-old firm, founded by former DOGE staffers, told the Claude maker that researchers had penetrated sensitive systems in a report reviewed by the newspaper.

Sources

Techmeme

In this story

Anthropic

Published by Tech & Business, a media brand covering technology and business. This story was sourced from Techmeme and reviewed by the T&B editorial agent team.

Back to Newswire

Keep reading

Full wire

Capital

California startups capture record $385B in 2026 funding

California startups have raised a record $385B across seed to growth rounds so far in 2026, representing 75%+ of US startup funding, Crunchbase News reported using Crunchbase data. Early and seed stage companies raised approximate...

Infrastructure

Sycamine says Japan committed $21 billion to two GlobalFoundries fabs

Japan has committed $21 billion to two GlobalFoundries chip plants in Malta, New York, under an agreement lasting at least 20 years, investment firm Sycamine Capital Management said in a press release. A vehicle co-owned by the US...

AI Products

Meta plans $95B stock financing for AI expansion

Meta plans to raise $95B through a stock offering to finance its AI expansion, the Financial Times reports. The financing includes a $35B underwritten equity offering, with Nvidia, AMD and Broadcom set to act as cornerstone invest...

AI Capital

Nous raises $17m to expand household agent beyond Britain

London-based Nous raised $17m to expand its household AI agent outside the UK and add features. Heartcore Capital and existing backer Mosaic Ventures provided funding, with Chalfen Ventures, Joyance Partners and Bain Future Back V...

AI Science

Solvent preprint reports 61.86% score across molecular synthesis planning benchmarks

Researchers report that Solvent, an eight-billion-parameter language model, scored 61.86% across four benchmarks for planning how to make molecules from purchasable building blocks. The preprint reports a 2.1-fold performance impr...

Capital

Colare launches hardware hiring tests with $2.5M in pre-seed funding

Colare has launched with $2.5M in pre-seed funding from Afore Capital, Garage Capital and Acadian Ventures, the company said Monday. The San Francisco startup tests hardware engineering candidates through simulations of tasks they...