Best Penetration Testing Companies (2026)
Curated lists of the top penetration testing providers, ranked by our editorial scoring methodology. Each list filters providers by a specific capability or accreditation.
Best UK Penetration Testing Companies (2026)
Compare the best UK penetration testing companies in 2026. Find CREST, CHECK, and CBEST-accredited providers for financial services, government, and enterprise testing. Editorial rankings reflect accreditation depth and verified capability.
29 providersUK Penetration Testing Providers: Q3 2026
The Q3 2026 edition of our UK penetration testing directory. Every provider is CREST, CHECK, CBEST or NCSC-checked against the issuing register, with the quarter's listing changes set out in full.
29 providersBest CREST Penetration Testing Companies (2026)
Compare the best CREST-accredited penetration testing companies in 2026. CREST certification ensures rigorous standards for pen testing methodology, reporting, and data handling. Editorial rankings reflect accreditation depth, team certifications, and verification.
47 providersBest Red Teaming Companies (2026)
Compare the best red teaming and adversary simulation providers in 2026. Find companies with proven expertise in realistic attack simulation, MITRE ATT&CK coverage, and threat-led pen testing. Editorial rankings reflect demonstrated capability and accreditation evidence.
70 providersMost Affordable Penetration Testing Providers (2026)
Find affordable, high-quality penetration testing providers for SMBs and startups in 2026. Compare budget-friendly pen testing companies that deliver professional results without enterprise pricing. Every listing here was scored by our editorial team.
39 providersBest Cloud Penetration Testing Providers (2026)
Compare the best cloud penetration testing providers in 2026 specialising in AWS, Azure, and GCP security assessment. Find experts in cloud-native security testing and configuration review. This list is editorially curated against verified cloud expertise.
85 providersBest Penetration Testing Companies for Startups (2026)
Find the best penetration testing providers for startups and early-stage companies in 2026. Compare pen testers that understand startup needs: fast turnaround, SOC 2 compliance, and developer-friendly reporting. Editorial rankings are determined by our independent scoring methodology.
11 providersBest Web Application Penetration Testing Companies (2026)
Compare the top web application penetration testing providers in 2026. Find experts in OWASP testing, API security, and modern web app security assessment. Every provider is evaluated on technical merit and editorial verification.
93 providersBest CHECK-Approved Penetration Testing Companies (2026)
Find CHECK-approved penetration testing companies for UK government and public sector testing in 2026. Compare NCSC-assured pen testing providers. Editorial order is set by accreditation breadth and verified capability.
12 providersBest Adversary Simulation Providers
Compare top adversary simulation providers for threat-led penetration testing. Find specialists in TIBER-EU, CBEST, and assumed-breach engagements aligned to MITRE ATT&CK.
36 providersFastest Turnaround Penetration Testing Providers (2026)
Find penetration testing providers with the fastest turnaround times in 2026. Compare companies that can start testing within days, not weeks, ideal for urgent compliance deadlines and rapid release cycles. Editorial rankings reflect verified delivery times and assessment.
8 providersBest Automotive Penetration Testing Companies (2026)
Compare the best automotive penetration testing companies in 2026: specialists in UN R155, ISO/SAE 21434, ECU and vehicle testing, and EV charging security.
3 providersBest Automotive Cybersecurity Companies (2026)
Compare the best automotive cybersecurity companies in 2026: firms securing vehicles, ECUs, and the automotive supply chain through offensive testing, TISAX assessment support, and UN R155 and ISO/SAE 21434 compliance work.
5 providersBest Companies for Cyber Resilience Act (CRA) Compliance (2026)
Compare companies that support EU Cyber Resilience Act (CRA) compliance for products with digital elements. Find specialists in CRA readiness, secure-by-default engineering, SBOM, vulnerability handling, and the security testing that demonstrates conformity.
6 providersBest PCI PTS Compliance Testing Companies (2026)
Compare companies that perform PCI PTS compliance testing of payment devices: PIN entry devices, encrypting PIN pads, unattended payment terminals, and secure card readers evaluated for PCI PIN Transaction Security approval.
7 providersPCI PTS Pre and Post Compliance Testing: What It Is and Who Offers It (2026)
What PCI PTS pre and post compliance testing is, how it differs from a formal lab evaluation, and why few firms offer it: offensive testing of payment terminals before and after PTS approval.
1 providerBest Product Threat Intelligence Providers (2026)
Product threat intelligence providers: specialists who research the vulnerabilities, exploits, and threat actors targeting connected products and devices, from vehicles and ECUs to EV charging, IoT, and payment hardware, and feed that intelligence into secure development and regulatory monitoring.
1 providerBest Threat Intelligence Providers for Financial Services (2026)
Compare threat intelligence providers serving banks, payment service providers, acquirers, and fintechs: from actor-centric intelligence on the groups targeting financial institutions to product-focused intelligence on the payment devices, ATMs, and payment infrastructure they run.
5 providersBest Public Sector Penetration Testing Companies (2026)
Compare penetration testing companies for UK public sector bodies: CHECK Green Light providers able to test central and local government, NHS, and PSN-connected systems, and deliver IT Health Checks accepted by NCSC and the Cabinet Office.
12 providersBest Penetration Testing Companies for Banking and Fintech (2026)
Compare penetration testing companies for banks, building societies, payment providers, and fintechs: providers with regulated testing credentials under CBEST, STAR-FS and TIBER-EU, DORA experience, PCI DSS scope, and payment device and ATM testing capability.
59 providersBest Threat-Led Penetration Testing (TLPT) Companies (2026)
Compare providers for threat-led penetration testing (TLPT): regulator-grade, intelligence-led red teaming under DORA, TIBER-EU, and CBEST for significant financial entities.
11 providersBest CBEST-Accredited Penetration Testing Companies (2026)
Compare CBEST-accredited providers in 2026. CBEST is the Bank of England's intelligence-led testing framework and requires CREST-accredited, CBEST-approved Red Team and Threat Intelligence providers, with CCRTS-qualified consultants and a CCRTM-managed engagement.
5 providersBest STAR-FS Penetration Testing Companies (2026)
Compare STAR-FS accredited providers in 2026. STAR-FS (Simulated Targeted Attack and Response for the Finance Sector) is the CREST-run intelligence-led testing scheme for FCA-regulated firms.
7 providersBest TIBER-EU Red Teaming Companies (2026)
Compare providers with TIBER-EU experience in 2026. TIBER-EU is the European Central Bank's intelligence-led red teaming framework, now aligned with DORA for critical financial entities.
6 providers