this post was submitted on 01 Jan 2024
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Does the TikTok have access to your home wifi network?
That one made me cringe hard when I first heard it.
The app of course needs access to the Internet, through your WiFi or mobile Internet. However, depending on the app, phone OS and the security configuration of your local network setup it could have access to other devices as well.
But that's usually on purpose or by accident of the user. In court, one valid question could be if TikTok tries to make use of such a configuration, and for what reasons.
So I think the question itself is not that bad, if it got a clarification / follow-up question like the above.
In all seriousness: yes. Any app or even website can scan your local network and attempt to access other devices. This is apparent in the fact that dedicated network scanner apps like Fing don't require any permissions to scan your network, therefore any app can if it wanted to.
Offtopic but here's some resources:
https://github.com/ashishb/android-security-awesome