Summary
On October 3, 2025, the ransomware group ShinyHunters publicly claimed responsibility for an attack targeting
Cisco Systems, Inc. (cisco.com), a U.S.-based technology company known for its networking hardware and software.
According to the threat actor’s post, they intend to release sensitive data unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | Cisco Systems, Inc. |
| Domain | cisco.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.” |
Cisco Systems, Inc., founded in 1984 and based in San Jose, California, is a leader in networking hardware and software development. The company has significantly contributed to the creation and evolution of internet infrastructure and protocols.
ShinyHunters, a well-known cybercriminal group, has previously been linked to numerous high-profile data breaches, often focusing on extracting sensitive information for ransom.
To proactively respond to such threats, organizations should consider implementing comprehensive dark web monitoring strategies. This can help identify potential risks before they escalate. Utilizing tools like the email breach checker at MSP Dark Intel can provide valuable insights into the security posture of your organization and alert you to any exposure of 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
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.
Table of Contents
