AI Security Institute Archives

In this handout image provided by CYBERUK, Anne Keast-Butler, Director, GCHQ speaks during the CYBERUK 2024 at Birmingham ICC Arena on May 14, 2024 in Birmingham, England. (Photo by Matthew Horwood for CYBERUK via Getty Images)

UK spy chief labels AI ‘unstoppable force’ with offensive, defensive ramifications for cyberspace

Anne Keast-Butler, head of the GCHQ, said her agency was developing an artificial intelligence-powered cyber shield as other nations were deploying AI in warfare.

May 27, 2026 By Tim Starks

Several partners reported that their rates of bug discovery with Mythos had increased more than tenfold. (Getty Images)

Anthropic: Mythos finds more than 10,000 software flaws in first month

Early results show a tenfold jump in bug discovery at some partners, and a widening gap between finding flaws and fixing them.

May 26, 2026 By Greg Otto

Researchers say AI just broke every benchmark for autonomous cyber capability

Two independent studies found that Anthropic's Claude Mythos Preview and OpenAI's GPT-5.5 have outpaced every trend line researchers were tracking. No one is sure if this is…

May 13, 2026 By Greg Otto