"Valorant has a custom security rootkit software called 'Vanguard' which has kernel level access on PCs that have the game installed. Vanguard is basically the 'anti-cheat' software that runs in background on your system (irrespective of whether you are playing Valorant at a given time or not) and Vanguard starts functioning with the booting process itself, even before you reach the Windows login screen.
What you may not be aware of is that Vanguard collects and transfers your data. A lot of it. Not only does it collect your personal information (name, billing address, basic details, contact number etc.), it also collects your preferences, time of activity, friendlist, key bindings, chat logs and voice chat recordings, PC specifications, browsing history, ISP details and geographical location! Not only does Vanguard collect and store all this information, it is also permitted to transfer your data to third parties and Riot's parent/holding and subsidiary companies."