Summary
On October 8, 2025, the ransomware group ShinyHunters publicly claimed responsibility for an attack targeting
Telstra (telstra.com.au), Australia’s leading telecommunications company.
According to the threat actor’s post, they intend to release sensitive data unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | Telstra |
| Domain | telstra.com.au |
| Country | Australia |
| Attacking Group | ShinyHunters |
| Date Reported | October 8, 2025 |
| Threat Actor Statement | “The full leak will be published soon, unless a company representative contacts us via the channels provided.” |
About Telstra
Telstra Corporation Limited is the largest telecommunications and media company in Australia. Founded in 1975 and based in Melbourne, it provides a wide range of services domestically and internationally. These include broadband and internet products and services, mobile, digital television, radio and satellite services. Telstra also offers a host of technology products such as cloud storage and data security.
About ShinyHunters
ShinyHunters is a notorious cybercriminal group known for targeting large corporations and stealing sensitive data to sell on the dark web. Their attacks are marked by sophisticated tactics and a focus on high-profile targets.
Proactive Response
Organizations can proactively respond to such threats through dark web monitoring to detect leaked data early and prevent further damage. It’s crucial to regularly use tools like the email breach checker at MSP Dark Intel to keep an eye on potential compromises and safeguard your company’s 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.
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