TikTok 18+ is a modified APK that functions as a 'clone' of the social network and is intended to circumvent moderation and display unrestricted content. However, this strategy of circumventing community guidelines can be dangerous, as it encourages the production and propagation of videos with themes such as pornography and violence. In addition, to download - which is not available in the official stores such as Play Store or App Store - users need to access links of dubious origin and hosted on unknown platforms.
This procedure already represents a risk and a security threat for users, who can install malware and viruses along with the app. You will understand what TikTok 18+ is and what risks the APK can pose to your phone.