Takeaways from the $566M Brians Club breach
Summary: An anonymous source sent KrebsOnSecurity a nearly 10 GB file containing roughly 26 million stolen credit and debit cards taken from BriansClub, an underground carding store, with 46 percent credit cards and 54 percent debit cards. Gemini Advisory estimated the records represent almost one-third of the 87 million card accounts then for sale underground, and that the collective price of the exposed records was $566 million while sold records exceeded $162 million.
What you should know: Anti-fraud teams at two large U.S. banks had already flagged 90-95 percent of the cards as compromised, while sources at two credit unions estimated they were previously unaware of about 80 percent of the cards in the Visa and MasterCard alerts - and smaller institutions are the ones most likely to absorb re-issuance costs.
Read the original at Krebs on Security ↗
- Topics
- Data Breaches
- Related
- TSMC employee data breach linked to cloud provider Cyber Risks · Nov 15, 2026Data Breach at La Poste Subsidiary Maileva Affects 22 Million People in France Cyber Risks · Nov 15, 2026City of Osaka warns of data breach impacting 1 million as Japan reels from dozens of cyber incidents Cyber Risks · Nov 13, 2026