Summary
On October 3, 2025, the notorious ransomware group ShinyHunters claimed responsibility for a cyber attack targeting Marriott International (marriott.com), a leading global hospitality company. The attackers have allegedly compromised sensitive data and are threatening to release it unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | Marriott |
| Domain | marriott.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.” |
Company Background
Marriott International is a renowned multinational hospitality company, headquartered in Maryland, USA. Founded in 1927, it operates a broad portfolio of hotels and related lodging facilities globally. The company’s offerings include diverse properties from luxury to economy chain brands. As of today, Marriott boasts more than 7,000 properties in over 130 countries and territories, making it one of the world’s largest hotel companies.
Threat Actor Group: ShinyHunters
ShinyHunters is a well-known cybercriminal group, often associated with data breaches and ransomware attacks targeting high-profile organizations worldwide. Their tactics typically involve data exfiltration followed by ransom demands.
Proactive Cybersecurity Measures
To protect against such devastating attacks, organizations should implement robust cybersecurity measures, including regular dark web monitoring. It’s crucial to identify potential data breaches early and mitigate risks before they escalate. We encourage companies to use our email breach checker at mspdarkintel.com/domain-breach-scan to monitor potential threats and safeguard sensitive information.
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
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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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