Summary
On October 3, 2025, the ransomware group ShinyHunters publicly claimed responsibility for an attack targeting
CarMax (carmax.com), a U.S.-based company renowned for its unique car buying experience.
According to the threat actor’s post, they intend to release sensitive data unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | CarMax |
| Domain | carmax.com |
| Country | USA |
| Attacking Group | ShinyHunters |
| Date Reported | October 3, 2025 |
| Threat Actor Statement | “The full leak will be published soon, unless a company representative contacts us via the channels provided.” |
About CarMax
CarMax is a leading car dealership company in the United States specializing in used cars. Known for its no-haggle pricing and customer-friendly services, CarMax provides financing options and a wide range of vehicles.
About ShinyHunters
ShinyHunters is a notorious cybercriminal group known for targeting various sectors worldwide, focusing on stealing and leaking sensitive data for financial gain.
Proactive Measures
To safeguard against such threats, organizations should invest in comprehensive cybersecurity measures, including dark web monitoring. Keeping an eye on potential data leaks and breaches can help mitigate risks. Utilize tools like the Email Breach Checker to monitor your company’s exposure on the dark web.
Recommendations
- Monitor your domains and email addresses for exposure using reputable threat intelligence tools.
- Conduct a full compromise assessment and incident response drill internally.
- Verify backups and ensure they are offline and ransomware-resistant.
- Educate staff on phishing, social engineering, and lateral movement techniques used by groups like Qilin.
- Engage with cyber forensics and legal counsel before initiating contact with threat actors.
Check Your Exposure
Wondering if your organization or employees are impacted by recent breach activity?
-
Check domain-wide breach exposure:
mspdarkintel.com/domain-breach-scan -
Check if an email was breached:
mspdarkintel.com/email-breach-scan
Disclaimer
The MSPDarkIntel team does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information.
All breach data reported here is sourced from publicly available threat intelligence feeds for awareness and early-warning purposes only.
Our goal is to inform organizations of emerging threats so they can take timely defensive action.
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