Sector Alarm Transforms Its Defense Layer
in One Afternoon with GreyMatter Agentic AI
Sector Alarm is a leading European home security company—trusted to protect over 730,000 homes and businesses across Europe with 24/7 monitoring and instant response to any alarm type.
Turning obstacles into outcomes
Challenges
A security team of 3 tasked with building a mature operation from zero across more than 730,000 homes and businesses in 8 countries
Monitoring from an existing managed service was poorly tuned—alerts firing without context, no enrichment, and no understanding of coverage gaps
Mean time to detection wasn't tracked; MITRE ATT&CK coverage was unknown; large areas of the estate had no telemetry
Results
Automation-first from day one with out-of-the-box Automated Response Playbooks
20 data sources onboarded via API in a single afternoon, with new sources deployable within 48 hours
12-minute mean time to detect at-source and at-storage 1,400+ detections deployed achieving 92% MITRE ATT&CK coverage within a year
Overview
When Craig Oliver joined Sector Alarm as the sole security hire, their existing monitoring service offered little operational value. Alerts fired constantly without tuning, coverage gaps were unmapped, and no metrics existed to communicate posture to leadership. He was challenged to build a credible, AI-driven security operations program from that baseline—with a team that would grow to just three.
A Team of Three Against Eight Countries of Exposure
When Craig’s team decided to go with GreyMatter, implementation went smoothly—GreyMatter's Universal Translator mapped each new data source to a common schema at ingest, allowing use cases to be deployed immediately—compressing what typically takes weeks into hours. Sector Alarm quickly reached 80% MITRE ATT&CK coverage, which grew to 92% as the team connected new data sources to GreyMatter. Today, with 1,400+ detections now deployed, Oliver's team has the coverage and confidence to report measurable security value to leadership every month.
"I sat down with my engineer at ReliaQuest, and in one afternoon we onboarded 20 log sources through API integrations. A zero-to-hero principle. It's all API driven—absorbing data into the portal was so quick."
Craig OliverChief Information Security Officer, Sector Alarm
GreyMatter as the Agentic Defense Layer
Behind GreyMatter's automation sits an agentic system architecture—six specialized personas with 200+ skills executing triage, correlation, and response autonomously. For Sector Alarm, this translates to an always-on defense layer that handles routine containment—password resets, session force-outs, IP blocking—while the team focuses exclusively on business-centric investigations that require human judgment and organizational context.
"We heavily rely on automation, and we trust ReliaQuest GreyMatter as our first and second line of defense. GreyMatter acts as an umbrella across our company to protect us from the noise and the day-to-day alerts. This leaves me and the team as the third line support to deal with the deeper alerts that are more business-centric."
Craig OliverChief Information Security Officer, Sector Alarm
Learn How GreyMatter Agentic AI Scales Your Security Operations
GreyMatter is an agentic AI security operations platform with 6 agentic Teammates that use hundreds of agent skills and AI tools to work toward an objective, not just tasks.
