CyberOne

CyberOne is a UK managed security services provider that rebranded from Comtact, an IT and security managed services firm operating since 2005. Under the CyberOne name, the company has narrowed its focus specifically to security operations: SOC-as-a-Service, Managed Detection and Response, Managed Extended Detection and Response (MXDR), threat intelligence, incident response, and penetration testing, delivered from a single UK Cyber Defence Centre in Milton Keynes with a stated 15-minute response commitment.

CyberOne’s technology stack is built on top of existing enterprise tools rather than a proprietary detection engine: the company runs its MDR/MXDR service across Microsoft Sentinel, CrowdStrike, Splunk, and Elastic Security, and has earned Microsoft-verified Managed XDR solution status, a formal partner certification rather than a self-declared claim. Its customer base is concentrated in mid-market and enterprise financial services, technology, legal, and healthcare organizations in the UK and wider Europe.

This is a services-and-integration play more than a product company: CyberOne’s differentiation comes from operational delivery (a single staffed SOC, defined response SLAs, multi-platform expertise) rather than a unique detection technology it owns outright. That makes independent verification of its detection efficacy harder to pin down beyond the Microsoft certification, since outcomes depend heavily on the underlying tools and the analysts operating them.

For organizations already standardized on Microsoft Sentinel or one of CyberOne’s other supported platforms, and wanting a UK-based MXDR provider with a formal Microsoft certification rather than a self-certified one, CyberOne is a credible mid-market MSSP option.