(NewsNation) — Public advocates fear a possible tsunami of identity theft could be coming after a hacking group claims it was able to steal nearly 3 billion personal records, including Social Security numbers.

The theft happened in April, according to a class-action lawsuit filed in federal court in Fort Lauderdale, Florida. It says the hacking group known as USDoD stole the records from National Public Data, which offers personal information to employers, private investigators and others who do background........

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