Largest collection ever of breached data found

Store of 770m email addresses and passwords discovered after being put on hacking site

The largest collection of breached data in history has been discovered, comprising more than 770m email addresses and passwords posted to a popular hacking forum in mid-December.

The 87GB data dump was discovered by the security researcher Troy Hunt, who runs the Have I Been Pwned breach-notification service. Hunt, who called the upload Collection #1, said it was probably "made up of many different individual data breaches from literally thousands of different sources", rather than representing a single hack of a very large service.