AI researchers ran 15-day simulations of worlds governed by different AI models: Claude Sonnet 4.6 recorded zero crime, while Gemini 3 Flash had the most at 683 (Jake Angelo/Fortune)

Sam Altman and Dario Amodei are among signatories on an open letter urging improved tracking of synthetic DNA potentially used in AI-developed bioweapons (Emily Mullin/Wired)

Liftoff Mobile raised $437M in its US IPO, selling 19M shares for $23 each, above its marketed range of $20 to $22, valuing the company at $3.83B (Natalia Kniazhevich/Bloomberg)

Apple says users in Texas must confirm they are 18 years or older or obtain parental consent to create an Apple Account starting June 4, after a court ruling (Juli Clover/MacRumors)

The US and other Five Eyes nations warn that China is flooding online job platforms with fake profiles and offers targeting government and military personnel (Greg Miller/Washington Post)

In a report, UK lawmakers call on the government to end a £330M NHS deal with Palantir and disclose more details of a military contract with the company (Bloomberg)

Security firm Calif says it used OpenAI's Codex to discover HTTP/2 Bomb, a remote DoS exploit affecting web servers like Nginx, Apache HTTPD, and Microsoft IIS (The Hacker News)