Now Krause is back with a new tool that lets anyone see JavaScript commands injected through an in-app browser.

Developer Felix Krause found TikTok's iOS app injecting code that could enable it to monitor all keyboard inputs and taps. Aka, keylogging.

[InAppBrowser] is stating the JavaScript commands that get executed by each app, as well as describing what effect each of those commands might have.” ...

I do have proof that the Instagram and Facebook app actively run JavaScript commands to inject an additional Javascript SDK without the user’s consent, as well as tracking the user’s text ...

A new online tool named 'InAppBrowser' lets you analyze the behavior of in-app browsers embedded within mobile apps and determine if they inject privacy-threatening JavaScript into websites you visit.

The wizard walks novice users through complex situations to create JavaScript commands and HTML files without ever needing to show them a line of code.

The research claims Facebook and Instagram can follow users when they click on links to other websites and monitor their activity.

Yahoo uses an automated filter to search e-mail and swap out a handful of words that pertain to Web code known as JavaScript.