Fastlane founder Felix Krause has revealed that Facebook and Instagram's in-app browsers inject JavaScript into third-party websites. Krause originally said the in-app browsers were injecting the ...

The researcher specifically says the JavaScript code does not mean our app is doing anything malicious, and admits they have no way to know what kind of data our in-app browser collects.

Recent reports detail how some apps inject JavaScript to track what users do in in-app browsers. Now a tool can help detect the presence of these scripts.

Meta and TikTok inject codes to track users "I don’t have a list of precise data Instagram sends back home. I do have proof that the Instagram and Facebook app actively run JavaScript commands ...

How easy is for a user to modify that variable and get access? My security (and JavaScript) knowledge isn't great.