I don't know what the exact exploit of the behavior is, but I've observed it on several "infected" computers while working in tech support. I've seen it on Inte

I don't know what the exact exploit of the behavior is, but I've observed it on several "infected" computers while working in tech support. I've seen it on Internet Explorer, Microsoft Edge, Google Chrome, and some variation of it on Safari, all of which I was only able to remedy by forcefully closing the browser using the task manager or equivalent. Truthfully, I have not actually observed this behavior on Firefox, and I'm quite thankfully no longer in the business of providing technical support to personal computer users, so hopefully I never will.