The National Public Data Breach Was the Biggest Ever Recorded
September 19, 2026
AI Summary
5 min readThe Biggest Data Breach in History: What the National Public Data Hack Means for You
In December 2023, a data broker called National Public Data (NPD) was breached. The result: 2.9 billion records—Social Security numbers, birth dates, home addresses—were stolen from citizens in the US, Canada, and the UK. The dataset weighed four terabytes. It is now for sale on the dark web for $3.5 million. And the person responsible? A Brazilian citizen who goes by the alias USDOD, who has already infiltrated the FBI's InfraGard program and Airbus, and who now says he is "untouchable" under Brazilian law.
How the Breach Unfolded
The story has two layers. First, in December 2023, NPD—a company that aggregates public records from government databases—was compromised by a threat actor known as USDOD. The stolen data included deeply sensitive personal information from more than two billion people, a number that exceeds the combined populations of the US, Canada, and the UK. The hacker used advanced techniques to exfiltrate the data without detection over an extended period, a remarkable feat given the database's size and complexity.
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What you'll learn
- 1 (02:43) **The Biggest Breach in Modern History** - The hosts introduce the scale of the National Public Data breach: 2.9 billion records, 4 terabytes of data, affecting US, Canada, and UK citizens.
- 2 (08:53) **The "Grave Error" at National Public Data** - The hosts reveal the root cause: an affiliated company, Records Check, accidentally published its own administrative passwords on its homepage.
- 3 (11:01) **Real-Life Impact: Three Shuttered Businesses** - Dino shares a personal story about three mid-sized businesses he knew, two of which are now closed and a third operating at 40% of its prior workforce.
- 4 (16:04) **Timeline of the Breach: December 2023 to August 2024** - The hosts lay out the chronology of the attack, starting with the initial breach of National Public Data (NPD) in December 2023.
- 5 (20:01) **Who is USDOD? The "One-Man Army"** - The hosts profile the hacker behind the breach, a single individual known as USDOD, not a group.
- 6 (22:39) **The Company Behind the Breach: Jericho Pictures** - The hosts investigate the corporate owner of National Public Data, identifying it as Jericho Pictures, a film studio in Coral Springs, Florida.
- 7 (25:14) **The Unmasking: How USDOD Was Doxed** - The hosts explain how the hacker's true identity was revealed, sending shockwaves through the cyber world.
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Show Notes
The world of cybersecurity has been rocked by a data breach so colossal that it's being called the Biggest Data Breach in Modern History. The National Public Data breach and hacker USDoD are discussed in a true cyber crime story.
The biggest data breach in modern history, involving National Public Data and its sister site Records Check. The breach compromised sensitive personal data of over 2 billion people and exposed vulnerabilities in cybersecurity practices. The hacker behind the breach, known as USDOD, is a Brazilian citizen and has a history of high-profile hacks. The conversation emphasizes the importance of cybersecurity for businesses, especially small to mid-sized ones, and the need for stronger regulations for data brokers. It also provides recommendations for individuals to protect themselves, such as freezing credit and monitoring financial accounts.
Chapters
- 00:00 What Happened and What You SHould Do
- 03:00 The Biggest Data Breach in Modern History
- 08:04 Protecting Small Businesses from Cyber Threats
- 13:03 Blind Spots in Cybersecurity
- 26:09 The Need for Stronger Regulations for Data Brokers
- 35:09 Taking Steps to Protect Personal Information
- 46:49 Making Cybersecurity a Priority in Business Operations
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Hosted by David Dean Mauro. Former trial lawyer, AI Security Advisor, FBI InfraGard member, VP of Strategic Growth at NetGain Technologies, and author of the Moving Target Trilogy (#1 Amazon Hot New Release, 2026).
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