What’s new: Colt Technology Services, a UK-based telecommunications company, is experiencing a cyberattack attributed to the WarLock ransomware gang, which has resulted in a multi-day outage affecting various services, including Colt Online and Voice API platforms. The attack began on August 12, and the company is currently working to restore affected systems. The attackers claim to have stolen one million documents, including sensitive financial and customer data, and are offering them for sale.
Who’s affected
Colt Technology Services and its customers are impacted by the outage and potential data breach. The company has taken specific systems offline as a precaution, affecting customer support operations.
What to do
- Monitor communications from Colt for updates on system restoration and security measures.
- Advise affected customers to reach out via email or phone, as online support channels are currently unavailable.
- Review security protocols and ensure systems are patched against vulnerabilities, particularly CVE-2025-53770, a critical remote code execution flaw in Microsoft SharePoint.
