PSA: If you use a web extension called Anki Highlight Helper, there’s a chance your browser is being hijacked to scrape content for sale to AI developers

It was recently reported that hundreds of extensions include a JavaScript library called MellowTel that scrapes your web browser for content that the extension developer then sells to AI developers.

This is relevant here because one of the extensions in question is a helper tool for Anki.

https://arstechnica.com/security/2025/07/browser-extensions-turn-nearly-1-million-browsers-into-website-scraping-bots/

Below is a google doc with a list of other extensions being used this way:

https://docs.google.com/spreadsheets/d/e/2PACX-1vT1XgBs25gRlg5e3nYCAff967WMtZZTO-TB3rR9zszaJpTpCVFg8j7FkBxnHb3tw3aHGjKBGSxYyLgV/pubhtml