How to tell if your password has been stolen in a security breach

Following the revelation that a list containing millions of stolen usernames and passwords had appeared online, we tell you a few different ways to find out if your credentials were stolen in that—or any other—security breach.

In mid-January, researcher Troy Hunt revealed that a list was floating around in the storage space of the MEGA cloud as well as in several hacking forums. Going by the name of Collection#1, it contains the largest theft of passwords organized into a list to date, comprising more than 700 million email addresses and more than 20 million passwords. (Read More)