At least three of Bytedance Ltd.’s major investors have marked up the TikTok-owner’s valuation to more than $400 billion, a sharp rebound for a Chinese social video leader that has been threatened with a US shutdown.

South Korea has accused Chinese AI startup DeepSeek of sharing user data with the owner of TikTok in China. "We confirmed DeepSeek communicating with ByteDance," the South Korean data protection regulator told Yonhap News Agency.

South Korea Suspends DeepSeek AI Over Privacy Concerns South Korea has taken strong action against DeepSeek, an artificial intelligence (AI) chatbot developed by a China-based startup, after concerns arose about its data-sharing practices.