Overview
Many UK businesses already pay for Microsoft Sentinel or another SIEM through their Microsoft 365 or Azure estate but lack the people to run it. We onboard and tune the platform you have, align log retention to your contracts and the NCSC's logging and monitoring guidance, and keep detections current.
Many organisations buy a SIEM and end up with an expensive log archive: missing sources, broken parsers, thousands of untuned alerts and nobody with time to maintain it. Our Managed SIEM service fixes that by treating the SIEM as a living detection platform.
We start by mapping the log sources that matter — identity, endpoint, cloud control planes, firewalls, VPN, email and critical applications — then onboard, normalise and validate them. Detection content is mapped to MITRE ATT&CK and tuned to your environment so that every alert is worth an analyst's time.
Managed SIEM can run on its own, with your internal team responding, or as the foundation of our 24/7 Managed SOC.
How our managed services work for UK organisations
- Cover through UK nights, weekends and bank holidays, when in-house teams are offline
- Escalations go to your named UK contacts by phone, email or Microsoft Teams, following agreed severities
- Monthly service reviews scheduled within UK business hours, with evidence packs for ISO 27001, Cyber Essentials and the NHS DSPT
- Data processing agreement covering transfers from the UK, using the IDTA or UK Addendum where personal data is involved
What's included
Our approach
- AssessReview existing SIEM, log sources, use cases and gaps.
- DesignDefine log strategy, retention, data model and priority use cases.
- OnboardConnect and parse log sources, validate data quality.
- DetectDeploy and tune detection content against real activity.
- OperateOngoing health monitoring, content updates and monthly reviews.
What you receive
- Log source coverage map
- Detection use-case library mapped to ATT&CK
- Tuned, documented correlation rules
- Health and data-quality monitoring
- Monthly SIEM service report
Standards & frameworks
- MITRE ATT&CK
- PCI DSS Req. 10
- ISO/IEC 27001 A.8.15/A.8.16
- NCSC logging & monitoring guidance
- NIST SP 800-92
- Cyber Essentials
Frequently asked questions
Which SIEM platforms do you support?
We work with leading commercial and open-source SIEM and security analytics platforms, and can recommend one if you don't have a SIEM yet.
What is the difference between Managed SIEM and Managed SOC?
Managed SIEM runs and tunes the platform; Managed SOC adds 24/7 analysts who triage, investigate and respond to what the SIEM detects.
Can you help reduce SIEM licensing costs?
Yes. Log filtering, tiered storage and use-case-driven onboarding often reduce ingestion volumes significantly without losing detection value.
Can you support UK organisations from India?
Yes. All services are delivered remotely by our team in India. India is 4.5 hours ahead of UK time during British Summer Time and 5.5 hours ahead in winter, so our working day overlaps with yours every morning and afternoon. Testing windows and escalation contacts are agreed around your UK schedule, and 24/7 services run around the clock.
Where is our data processed?
Engagement data is handled by our team in India under NDA, with encrypted storage, least-privilege access and secure deletion at the end of the agreed retention period. We can sign a data processing agreement using the UK International Data Transfer Agreement (IDTA) or the UK Addendum to the EU standard contractual clauses where personal data is involved.