Five million gmail addresses and passwords appeared on a Russian bitcoin forum this week, but Google says their servers were not breached.
The list appears to be a collection of passwords exposed in previous hacks. They also say there is no telling if the list is even authentic, but they are warning users to take steps to protect their accounts.
For added peace of mind, enter your email address into this trusted online tool to see if it was hacked.
Gmail users are encouraged to create stronger passwords and use two-step authentication.