CarMax
Data Breach
www.carmax.com451,388
Records Exposed
Jan 2026
Date of Breach
Database
Breach Type
Sep 2026
Added to Database
About This Breach
In January 2026, CarMax, the largest used-car retailer in the United States, was affected by a data breach as part of the ShinyHunters extortion campaign targeting Salesforce environments. The breach exposed approximately 431 thousand records (around 431 thousand unique email addresses), including email addresses, first and last names, phone numbers and physical addresses belonging to customers. The data was exported from a CarMax Salesforce Person Account object and published on the ShinyHunters data leak site after the company did not pay the ransom. No passwords were included. The records were distributed via Telegram by the threat actor group ShinyHunters.
Compromised Data Types
Country
United States
Language
English
Category
Retail
Indexed On
Sep 29, 2026
Breach Type
Database
What Should You Do?
Get Full Breach Details with LeakedSource Pro
Sign up for a LeakedSource Pro account to see exactly what data was exposed in this breach and get real-time notifications when your information appears in new breaches.
Sign Up for Pro- Watch for phishing emails targeting your inbox. Attackers may use your exposed email address to send convincing scam messages.
- Be alert to smishing attacks (SMS phishing). Scammers may text you pretending to be banks or service providers.
- Enable two-factor authentication (2FA) on all important accounts to add an extra layer of security.
- Use a password manager to generate and store unique, strong passwords for every account.
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