In-app browsers provide developers with a convenient way to let users browse specific websites without leaving their apps. However, they can be used to violate user privacy.
Armed with this data, a “digital fingerprint” can be created of a specific individual that can be used for targeted advertising.
To use the tool, you just need to open the app you want to analyze and use the in-app browser to open the URL”https://InAppBrowser.com”.
Krause has already tested some popular apps with his tool, including TikTok and Instagram.
TikTok was found to monitor all keyboard inputs and screen taps when using the in-app browser. Instagram, meanwhile, was able to detect all text selections on websites.
In a disclaimer about the limitations of his tool, Krause wrote:
This tool also cannot detect other app tracking that may occur, such as custom gesture recognition, screenshot detection, or web request event tracking.”
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