PC Mag: “A little-known company in Florida allegedly lost records on 2.9 billion individuals to hackers, according to a class-action lawsuit. National Public Data specializes in background checks and fraud prevention. But the data it collects appears to have ended up in the hands of a hacking group called “USDoD.” It began selling access to the stolen data in April, claiming to have info on users in the US, UK, and Canada.  It has since been hit with a class-action lawsuit, Bloomberg Law reports. California resident Christopher Hoffman filed after his identity protection provider notified him that his personal data had been compromised in the breach.  The data leak might be one of the largest of all time, although the full scale of the incident remains unconfirmed. National Public Data didn’t immediately respond to a request for comment. But in June, malware collection site VX Underground was able to review the stolen data, which was originally on sale for $3.5 million…”