Who was breached, what was exposed, and what to do about it.
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1,000+ catalogued breaches: the date, the account count, and exactly what was exposed.
Tick what was leaked and get the steps in order, each linked to the rule behind it.
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December 2025 has seen several major data breaches come to light, affecting millions of individuals across multiple industries. Here are the three most significant breaches making headlines this month. 1. Marquis Software Solutions – 780,000+ Affected Across 74 Financial Institutions In early December, fintech provider Marquis Software Solutions disclosed a devastating ransomware attack that compromised … Read more
Update: The deadline to file a claim has now passed (December 18, 2025). The AT&T Data Breach Class Action Settlement offered up to $177 million in compensation to affected customers across two major data breaches that exposed sensitive personal information. What Happened AT&T experienced two significant data breaches affecting millions of customers: Breach 1 (announced … Read more
Breach coverage goes wrong in two directions: inflating an exposure into a certainty, or burying it. We publish the disclosed numbers, name the source, and mark clearly where an investigation is still open and the count may change.
Most people find out from a letter weeks after the fact. These are the steps that still work at that point, in the order they should be done, with what each one does and does not protect.
Primary sources: the breached organization's own notification letter, filings in state Attorney General breach databases, the U.S. Department of Health and Human Services breach portal for healthcare incidents, SEC filings, court records and regulator announcements. Where we cite a figure, that figure comes from one of those documents.
Not necessarily, and the difference matters. Most notices state that an unauthorized party accessed or acquired data. That is a different finding from evidence that the data has been used for fraud. We report which one a given notice supports, and we do not fill the gap with speculation.
No. Only the organization that holds your records can confirm that, and it is required to notify you. What we can do is tell you what was disclosed, who the claims administrator or notification contact is, and what steps are worth taking while you wait.
No. Data Breach Radar is independent reporting. Nothing on this site creates a professional relationship or substitutes for advice from a lawyer, a security professional or your bank. Always verify details against the notice you received.
The site is free to read and carries advertising. Some pages may contain affiliate links, which are disclosed on our Affiliate Disclosure page. Advertisers and affiliate partners have no input into what we cover or what we say about it, and we do not accept payment to include, exclude or soften a breach report.
Email contact@databreachradar.com with the URL and what is inaccurate. Corrections to a published report are made on the page itself. Our approach to sourcing and corrections is set out in the Editorial Policy.