Have I Been Pwned, the breach notification service that serves as a bellwether for the security of login credentials, has just gotten its hands on its biggest data haul ever—a list that includes almost 773 million unique email addresses and 21 million unique passwords that were used to log in to third-party sites.

Quora announced tonight that one of their systems was hacked and has led to the exposure of approximately 100 million user’s data to an unauthorized third-party.

A huge database with over 114 million records of US citizens and companies has been discovered sitting online unprotected. The number of individuals impacted by the exposure is estimated to almost 83 million.

If you received a strange email from Amazon stating that they may have disclosed your email address due to a technical error, you are not alone. It seems a web site issue caused some user’s email addresses to be disclosed and has since been resolved.

A hacker gained access to nearly 50 million Facebook user accounts by exploiting a weakness in the social network’s systems, Facebook said on Friday.