A Florida-based company is facing multiple proposed class actions, after a massive data breach that one suit claims leaked nearly three billion files containing personal data on people in Canada, the U.S. and the U.K., including names and home addresses.

One of the first suit to be reported on was a proposed class action filed Aug. 1 by California resident Christopher Hofmann in the U.S. District Court for the Southern District of Florida. It alleges that a hacking group called USDoD posted a database on April 8 called "National Public Data" on a dark web forum claiming to have the personal data of 2.9 billion individuals, and attempted to sell it for $3.5 million US.

Tech site Bleeping Computer reported that a hacker then leaked a version of the stolen data for free on a hacking forum on Aug. 6.

At least six complaints have been filed against the company, National Public Data, this month.