Overview
Precursor Security is a UK-based cybersecurity firm, CREST-accredited, offering integrated services in penetration testing, 24/7 managed Security Operations Centre (SOC) and compliance. The firm distinguishes itself through triple CREST accreditation covering penetration testing, vulnerability assessment and SOC management. Fewer than 70 companies in the UK hold both penetration testing and SOC management accreditations simultaneously. Consultants are individually certified and assessed by CREST. Precursor employs exclusively UK-based staff with no offshore outsourcing. For more information, visit https://precursorsecurity.co.uk.
Services and expertise
Penetration testing
Manual testing covering networks, web applications, cloud environments, mobile applications and APIs. Testing is conducted by individually CREST-accredited consultants. Pricing is fixed from £2,500. The firm offers a manual testing approach rather than automated analysis alone.
Managed Security Operations Centre (SOC)
UK-based 24/7 monitoring and detection service, from £900 per month. The SOC integrates active threat intelligence sharing directly into each engagement, allowing defences to be tested against current adversary techniques rather than past tactics.
Compliance services
Compliance support covering ISO 27001, Cyber Essentials and CSRB 2025. These services integrate into the firm's overall platform, aligning offensive findings, defensive detections and compliance evidence.
Methodology
Precursor combines CREST-accredited penetration testing with live threat intelligence from its 24/7 SOC. This integration allows security assessments to be aligned with contemporary attack techniques observed by defensive teams, rather than previous theoretical scenarios.
Operational characteristics
Engagements can commence within two weeks of scope signature. All consultants are UK-based. The firm holds Cyber Essentials Plus accreditation in addition to its three CREST accreditations.
