Protect
Email security, endpoint controls, managed firewalls, identity hardening and staff awareness reduce the likelihood of a successful attack.
Clear identity and accountability
About 39Security.
39Security provides managed cyber security packages for established small businesses that need stronger protection without building an internal security department.
Who we protect
Practical security for businesses with real operational risk.
Our core clients typically have 10–50 users, turnover around £750,000–£5 million, valuable Microsoft 365 data and a growing requirement to demonstrate that cyber risk is controlled.
We focus particularly on organisations in Essex, Kent, Hertfordshire and London, including professional services, construction, logistics, property, recruitment, accountancy, manufacturing and owner-managed groups.
Assess your current securityCanonical company details
- Brand
- 39Security
- Legal entity
- Thirty Nine Degrees Ltd
- Company number
- 11715128
- ICO registration
- ZA764888
- Address
- Run Way House, North Weald Air Field, Northweald, Essex, England, CM16 6HR
- Telephone
- 01279 800 039
- [email protected]
What we manage
Security controls with an accountable service owner.
The service is designed around prevention, detection, recovery and evidence rather than a collection of disconnected licences.
Detect and respond
MDR and EDR provide investigation, containment and a defined escalation route when suspicious activity becomes an incident.
Recover and prove
Independent Microsoft 365 backup, recovery testing, reporting and governance support help the business continue trading and answer client or insurer questions.
Technical leadership
Matthew Southgate
39Security is led by a UK systems architect with hands-on experience across business IT, Microsoft 365, ISP networks, BGP, VoIP, resilient infrastructure and cyber security. This wider operational background helps security controls fit the way a business actually works.
Related 39 Group expertise
Connected services, clearly separated.
- 39D — managed IT support and Microsoft 365
- 39T — connectivity, Wi-Fi and business communications
- 39 Networks — network infrastructure and public network tools
- UKDDI — business telephone numbers and SIP services