Security & breach glossary

Plain-English definitions of common data-breach and security terms.

Data breachUnauthorized access to or release of private data.
Credential stuffingReusing leaked username and password pairs to break into other accounts.
PhishingFake messages that trick you into giving up information.
RansomwareMalware that encrypts data and demands payment.
Two-factor authentication (2FA)A second login step beyond your password.
Credit freezeBlocking new credit accounts from being opened in your name.
Dark webHidden parts of the internet where stolen data is often traded.
Password managerAn app that creates and stores a unique password for every site.