TikTok CEO faces Congress scrutiny over national security concerns.

TikTok CEO Shou Zi Chew faced a four-and-a-half-hour grilling from US Congress, with both Democrats and Republicans questioning him relentlessly on data privacy and security concerns. Chew admitted that ByteDance engineers in China have access to some US data, and that he owns shares in ByteDance. He also defended TikTok's data practices by pointing out that American companies like Facebook have had their own data scandals. Despite TikTok's aggressive lobbying efforts in Washington, the hearing showed that there is bipartisan agreement that TikTok is a security threat.