TeraBase64

The TeraBase64 data breach was a massive compilation of credentials surfaced in February 2020 by the actor known as httsmvkcom. This collection contained approximately 3.2 billion records featuring email addresses and plain text passwords. Investigation revealed that 1.28 billion of these entries were unique. The incident represents an aggregation of data from numerous previous breaches rather than a single new hack. The sheer scale made it one of the largest credential stuffing resources available at the time of its release on various underground forums and public hosting services.