How to Tell if Your Passwords Were Hacked—And What to Do If They Were

Discovering that even one password has been possibly stolen can be unsettling. But what’s the game plan if you’ve used that password on dozens of sites?

Tools that detect compromised passwords often say things like: “You have 87 leaked passwords.” Jon Krause

In the past, we all had favorite passwords we’d use for all kinds of websites and apps, a set of easy-to-remember phrases, because who can keep track of so many? The bad news is, those passwords have all probably leaked in data breaches. And if hackers have the password for one site, they can try it on others to see if you reused it. 

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