According to a security expert, tens of millions of usernames and passwords have been hacked, concerning email accounts with Gmail, Hotmail and Yahoo, with the details traded online.
The report says that data from somewhere in the region of 97 million accounts have been swiped. So says Alex Holden, founder and chief information security officer of Hold Security.
It looks like personal information from around 40 million Yahoo Mail accounts, 33 million Hotmail accounts and 24 million Gmail accounts have been accessed.
Mainly, the hack concerns details stolen from Russia's most popular email service Mail.ru
"This information is potent. It is floating around in the underground and this person has shown he's willing to give the data away to people who are nice to him," said Holden.
"These credentials can be abused multiple times."
You can read Hold Security's full report on this breach, right here, if you want to know more.
Obviously, it'd be a good time to update your password if you have accounts with any of those companies, or, you can ride your luck like you normally do. We're not the boss of you.