A few days ago, developer Felix Krause shared a detailed report on how mobile apps can use their own in-app web browser to track user data. Now Krause is back with a new tool that lets anyone see ...

In-app browsers on TikTok and other apps include code that could potentially track user activity on websites. (Photo Illustration by Thiago Prudêncio/SOPA Images/LightRocket via Getty Images) When ...