Category Archives: Data Breaches

Stories about data breaches at retailers, corporations, governments and organizations of all sizes.

Breachforums Boss to Pay $700k in Healthcare Breach

May 15, 2025
27 Comments

In what experts are calling a novel legal outcome, the 22-year-old former administrator of the cybercrime community Breachforums will forfeit nearly $700,000 to settle a civil lawsuit from a health insurance company whose customer data was posted for sale on the forum in 2023. Conor Brian Fitzpatrick, a.k.a. “Pompompurin,” is slated for resentencing next month after pleading guilty to access device fraud and possession of child sexual abuse material (CSAM).

Feds Link $150M Cyberheist to 2022 LastPass Hacks

March 7, 2025
61 Comments

In September 2023, KrebsOnSecurity published findings from security researchers who concluded that a series of six-figure cyberheists across dozens of victims resulted from thieves cracking master passwords stolen from the password manager service LastPass in 2022. In a court filing this week, U.S. federal agents investigating a spectacular $150 million cryptocurrency heist said they had reached the same conclusion.

Fintech Giant Finastra Investigating Data Breach

November 19, 2024
15 Comments

The financial technology firm Finastra is investigating the alleged large-scale theft of information from its internal file transfer platform, KrebsOnSecurity has learned. Finastra, which provides software and services to 45 of the world’s top 50 banks, notified customers of a potential breach after a cybercriminal began selling more than 400 gigabytes of data purportedly stolen from the company. 

An Interview With the Target & Home Depot Hacker

November 14, 2024
21 Comments

In December 2023, KrebsOnSecurity revealed the real-life identity of Rescator, the nickname used by a Russian cybercriminal who sold more than 100 million payment cards stolen from Target and Home Depot between 2013 and 2014. Moscow resident Mikhail Shefel, who confirmed using the Rescator identity in a recent interview, also admitted reaching out because he is broke and seeking publicity for several new money making schemes.

Change Healthcare Breach Hits 100M Americans

October 30, 2024
52 Comments

Change Healthcare says it has notified approximately 100 million Americans that their personal, financial and healthcare records may have been stolen in a February 2024 ransomware attack that caused the largest ever known data breach of protected health information.

Brazil Arrests ‘USDoD,’ Hacker in FBI Infragard Breach

October 18, 2024
11 Comments

Brazilian authorities reportedly have arrested a 33-year-old man on suspicion of being “USDoD,” a prolific cybercriminal who rose to infamy in 2022 after infiltrating the FBI’s InfraGard program and leaking contact information for 80,000 members. More recently, USDoD was behind a breach at the consumer data broker National Public Data that led to the leak of Social Security numbers and other personal information for a significant portion of the U.S. population.

National Public Data Published Its Own Passwords

August 19, 2024
127 Comments

New details are emerging about a breach at National Public Data (NPD), a consumer data broker that recently spilled hundreds of millions of Americans’ Social Security Numbers, addresses, and phone numbers online. KrebsOnSecurity has learned that another NPD data broker which shares access to the same consumer records inadvertently published the passwords to its back-end database in a file that was freely available for download from its homepage until today.

NationalPublicData.com Hack Exposes a Nation’s Data

August 15, 2024
43 Comments

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.

Low-Drama ‘Dark Angels’ Reap Record Ransoms

August 5, 2024
25 Comments

A ransomware group called Dark Angels made headlines this past week when it was revealed the crime group recently received a record $75 million data ransom payment from a Fortune 50 company. Security experts say the Dark Angels have been around since 2021, but the group doesn’t get much press because they work alone and maintain a low profile, picking one target at a time and favoring mass data theft over disrupting the victim’s operations.

Researchers: Weak Security Defaults Enabled Squarespace Domains Hijacks

July 15, 2024
12 Comments

At least a dozen organizations with domain names at domain registrar Squarespace saw their websites hijacked last week. Squarespace bought all assets of Google Domains a year ago, but many customers still haven’t set up their new accounts. Experts say malicious hackers learned they could commandeer any migrated Squarespace accounts that hadn’t yet been registered, merely by supplying an email address tied to an existing domain.