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by tacticalmook 1868 days ago
> It works by asking the browser to show a confirmation dialog in a popup window. Then the JavaScript code can detect if a popup has just been opened and detect the presence of an application based on that.

> ...

> Tor Browser has confirmation dialogs disabled entirely as a privacy feature, which, ironically, exposed a more damaging vulnerability for this particular exploit. Nothing is shown while the exploit runs in the background, contrasting with other browsers that show pop-ups during the process.