Many websites have leaked passwords. Attackers can download databases of usernames and passwords and use them to “hack” your accounts. This is why you shouldn’t reuse passwords for important websites, because a leak by one site can give attackers everything they need to sign into other accounts.
You've installed antivirus, a VPN, and other security software on your PC, phones, and tablets, but how do you know if it's doing its thing to keep you safe? We have a dozen tips to help you perform your own security checkup.