Students Target Teachers in Group TikTok Attack, Shaking Their School

Seventh and eighth graders in Malvern, Pa., impersonating their teachers posted disparaging, lewd, racist and homophobic videos in the first known mass attack of its kind in the U.S.

Facial Recognition Led to Wrongful Arrests. So Detroit Is Making Changes.

The Detroit Police Department arrested three people after bad facial recognition matches, a national record. But it’s adopting new policies that even the A.C.L.U. endorses.

How Tech Giants Cut Corners to Harvest Data for A.I.

OpenAI, Google and Meta ignored corporate policies, altered their own rules and discussed skirting copyright law as they sought online information to train their newest artificial intelligence systems.