About Precursor Security: UK Cyber Security Firm
Precursor Security is a CREST-accredited UK cyber security firm headquartered in Leeds. We close the gap between how attackers operate and how businesses defend, replacing checkbox compliance with active adversary simulation and 24/7 CREST SOC coverage.
Our DNA.
The values that drive every engagement, every decision, every line of code.
100% UK Delivery
Zero offshoring. Zero data export. All operations are conducted from our secure UK facilities.
Demystify Security
We kill the jargon. Clear, actionable reporting that bridges the gap between the Boardroom and the Server Room.
Beyond the Report
Security doesn't end with a report. We provide ongoing advisory, retesting, and threat briefings to keep you ahead of the curve.
True Partnership
We act as an extension of your internal team, available on Slack/Teams for ad-hoc advice, not just during the test window.
Triple CREST Accreditation
One of a select number of organisations globally holding CREST accreditation for Penetration Testing, Vulnerability Assessment, and Security Operations Centre services.
Portal Access
Every client gets access to our SOC and Pentest portals, delivering real-time visibility, threat intel enrichment, and full transparency into your security posture.
The Evolution
From a boutique consultancy to a national defence asset.
The Inception
Founded with a mission to bridge the gap between Offensive Intelligence and Defensive Operations.
CREST Pentesting Accreditation
Achieved CREST Penetration Testing accreditation, joining an elite group of certified offensive security providers.
SOC Launch
Launched our 24/7 Managed SOC in Newcastle, providing continuous overwatch for mid-market enterprises.
CREST SOC Accreditation
Achieved CREST SOC accreditation within 6 months of launch, becoming one of fewer than 70 CREST-accredited SOCs globally.
UK Delivery is
National Security.
In an era of global supply chain risks, knowing where your security team sits is as important as who they are. Every Precursor consultant and analyst is UK-based with no offshoring of work.
UK by Design
Every analyst and every consultant is UK-based. No offshore handoffs, no follow-the-sun, no exceptions.