Calls in the US for a ban on TikTok have reignited the global debate about its cyber-security risks
TikTok collects an 'excessive' amount of data.
TikTok says the app's data collection is "In line with industry practices".
Critics frequently accuse TikTok of harvesting huge amounts of data.
Analysts said TikTok collects details such as location, what specific device is being used and which other apps are on it.
A similar test carried out by Citizen Lab concluded "In comparison to other popular social media platforms, TikTok collects similar types of data to track user behaviour".
TikTok could be used by the Chinese government to spy on users.
TikTok says the company is fully independent and "Has not provided user data to the Chinese government, nor would we if asked".
Shanghai tech giant ByteDance owns TikTok and its sister app Douyin.
Since 2020, TikTok executives have repeatedly tried to reassure people that Chinese staff cannot access the data of non-Chinese users.
TikTok says "Data of our European users is safeguarded in a specially designed protective environment, and can only be accessed by approved employees subject to strict independent oversight and verification."