NationalPublicData.com Hack Exposes a Nation’s Data

A great many readers this month reported receiving alerts that their Social Security Number, name, address and other personal information were exposed in a breach at a little-known but aptly-named consumer data broker called NationalPublicData.com. This post examines what we know about a breach that has exposed hundreds of millions of consumer records. We’ll also take a closer look at the data broker that got hacked — a background check company founded by an actor and retired sheriff’s deputy from Florida.



On July 21, 2024, denizens of the cybercrime community Breachforums released more than 4 terabytes of data they claimed was stolen from nationalpublicdata.com, a Florida-based company that collects data on consumers and processes background checks.


The breach tracking service HaveIBeenPwned.com and the cybercrime-focused Twitter account vx-underground both concluded the leak is the same information first put up for sale in April 2024 by a prolific cybercriminal who goes by the name “USDoD.”


On April 7, USDoD posted a sales thread on Breachforums for four terabytes of data — 2.9 billion rows of records — they claimed was taken from nationalpublicdata.com. The snippets of stolen data that USDoD offered as teasers showed rows of names, addresses, phone numbers, and Social Security Numbers (SSNs). Their asking price? $3.5 million.


Many media outlets mistakenly reported that the National Public data breach affects 2.9 billion people (that figure actually refers to the number of rows in the leaked data sets). HaveIBeenOwned.com’s Troy Hunt analyzed the leaked data and found it is a somewhat disparate collection of consumer and business records, including the real names, addresses, phone numbers and SSNs of millions of Americans (bo ..

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