A study by URL Genius found that TikTok and YouTube track users' personal data more than any other social media apps, with TikTok allowing third-party trackers to collect data. The study used Apple's iOS feature to count network contacts across 10 social media apps and found that YouTube and TikTok had the highest number of network contacts. TikTok's data collection practices have raised concerns, particularly with regards to its ownership by Chinese tech giant ByteDance. The company has stated that it employs security measures to safeguard sensitive user data, but the study's findings have sparked debate about data privacy and security.