Washington: Many in the United States see TikTok, the highly popular video-sharing app owned by Beijing-based ByteDance, as a threat to national security. The following is a look at five reasons why: Data sharing TikTok — like its rivals Instagram, Snapchat and YouTube — thrives on data and there seems to be no limit to how much young users are willing to share about themselves on the super addictive app. TikTok’s critics worry that all this information is being processed by a Chinese company in China where the Communist Party reigns supreme. But some experts believe the threat is overblown...