: Multi-factor authentication is the most effective defense against credential stuffing.
: You can use services like Have I Been Pwned to see which specific breach your data originated from. Download 310k mixed combolist txt
A is a plain text file containing large sets of stolen username or email and password pairs. : Multi-factor authentication is the most effective defense
Finding your email on a 310k mixed list means your credentials were likely part of a past data breach. Download 310k mixed combolist txt
: Tools like Sentry MBA or OpenBullet test thousands of credentials per minute.