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Strange pop-ups, unexpected apps and a mind-of-its-own webcam? Here’s how to tell if your computer has been hacked—and what ...

Hackers also want access to your various online accounts. One of the most common ways accounts are “hacked” doesn’t even involve hacking a computer at all.

And over the past day or so, there was a hack to see the Discover performance report broken out by desktop and mobile. But that hack was quietly disabled this morning. How it worked.