Telegram Becomes Free Speech Flashpoint After Founder’s Arrest

Pavel Durov, the founder of the app, which has more than 900 million users, was taken into custody by the French authorities.

How Mark Zuckerberg’s Meta Failed Children on Safety

The C.E.O. and his team drove Meta’s efforts to capture young users and misled the public about the risks, lawsuits by state attorneys general say.

Taiwan, on China’s Doorstep, Is Dealing With TikTok Its Own Way

The island democracy was early to ban TikTok on government phones, and the ruling party refuses to use it. But a U.S.-style ban is not under consideration.

TikTok’s Origin Story: Court Files Show Role of GOP Megadonor Jeff Yass

Court records, mistakenly made public, tell a story about the birth of ByteDance, its bumpy road to success and the role of the Republican megadonor Jeff Yass’s firm.

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.