2.9 Billion Records Stolen in Hack, Including Social Security Numbers, Lawsuit Alleges

A Social Security card sits alongside checks from the U.S. Treasury in Washington on Oct. 14, 2021. Kevin Dietsch/Getty Images

A massive cyber attack has compromised 2.9 billion records, according to a new class-action lawsuit.

A complaint filed in the U.S. District Court for the Southern District of Florida claims that a cybercriminal group called USDoD hacked Florida-based company National Public Data, which stores personal information.