All companies

SCYTHE provides a platform for continuous adversarial exposure validation across IT, cloud, and OT environments.

SealGate provides a security gateway that governs how AI agents access company data.

Vienna-headquartered Austrian cybersecurity consultancy with a prolific Vulnerability Lab research program and deep expertise in IoT and embedded systems security across the DACH region.

Manchester-based independent cybersecurity consultancy with over 20 years of experience delivering CREST and CHECK-accredited penetration testing, red teaming, and compliance certification services.

Jinan company providing connected-vehicle test tools, cyber ranges, vulnerability research and compliance services for carmakers.

UK offensive security consultancy delivering CREST-accredited penetration testing, adversary simulation and CBEST, TIBER-EU and TBEST threat-led testing, mainly for financial services and other large organisations.

SecLens provides free email security assessments by checking seven DNS-based protocols and offering remediation advice.

CREST-accredited information security and GRC consulting firm near Dallas. Pairs full-scope penetration testing with governance, risk, and compliance advisory and security training.

Secomea provides secure remote access software and hardware for industrial control systems.

Second Front Systems provides a DevSecOps suite that helps software providers and government agencies build, secure, and deploy software to government and regulated networks.

Sectra provides medical imaging IT and cybersecurity solutions for healthcare and critical infrastructure.

Builds cryptographic validation, information intelligence, regulatory assurance and sovereign AI products for defence and government.

SecureNET Systems provides IT outsourcing and cybersecurity services to small and medium businesses in Bucharest and Ilfov.

Sunnyvale and Pune firm selling in-vehicle intrusion detection, vehicle SOC analytics, secure OTA and security assessments.

Vulnerability intelligence-driven penetration testing firm providing contextual security assessments informed by threat actor exploitation data and ransomware tracking.

Poland's longest-running independent pen testing firm with 50+ consultants. Specialises in application security, cloud testing, and red teaming.

Securiti provides a platform for data security, privacy, governance and compliance across hybrid multicloud environments.

Security Quotient provides cyber security, data privacy and AI governance training for regulated enterprises.

SecurityScorecard provides a platform for managing third-party and supply chain cyber risk.

Securonix provides a cloud-native platform for security operations, combining SIEM, UEBA, SOAR and threat intelligence.

Secvura reviews web and SaaS applications for security weaknesses and helps teams fix them.

Segura provides privileged access management and identity security software for organisations.

Sekoia provides an AI-driven security operations platform for detecting, investigating and responding to cyber threats.

Australian CREST-accredited cybersecurity consultancy formed from the 2021 Privasec, Naviro, AvertRo, and Theta merger. Risk-led offensive security with strong APRA and Essential Eight programme work.

Semgrep provides a platform for scanning code and dependencies to find security issues.

Semperis provides identity-driven cyber resilience and crisis management for critical identity systems.

CREST-accredited North East England penetration testing specialist founded in 2019, offering accessible and transparent security testing with free retests and a strong focus on social engineering.

Sendmarc provides a platform for managing DMARC, SPF, and DKIM email authentication.

Ethical hacking team within Orange Cyberdefense with a 20+ year track record. Known for building industry-standard security tools and groundbreaking research.

Senteon automates endpoint hardening and CIS benchmark compliance for audits.

SentinelOne provides an AI-native cybersecurity platform for endpoint, identity, and cloud protection.

Sentra provides data security solutions to discover and protect sensitive data from AI applications.

Sentrint is an automated source-code security scanner sold as a software-as-a-service product.

French security evaluation lab (ITSEF/CESTI) recognised by the PCI SSC for PTS device evaluation, plus EMVCo and Common Criteria.

Integrated risk management software for policy, compliance, audit and third-party risk, sold as part of a wider IT and business workflow platform.

Sevii provides an autonomous defense and remediation platform that stops cyber adversaries without human intervention.

Swiss testing and certification group offering security evaluations, penetration tests and ISO/SAE 21434 audits.

Dutch security evaluation lab, part of SGS, recognised by the PCI SSC for PTS device evaluation and accredited for EMVCo and Common Criteria.

ShadowDragon provides an OSINT software platform for investigators to collect and analyse public data.

Sherlock provides security audits and bug bounties for onchain systems and Web3 protocols.

ShieldApps Software Innovations is an international software development company that builds security, privacy and performance tools for home computers.

Independent Italian offensive security firm specialising in web, mobile, network, and embedded security assessments with a strong research focus.

ShieldLabs provides fraud detection and prevention for web apps by scoring visitor risk.

Onboard monitoring platform that detects cyber and electronic warfare threats on military vehicles, aircraft, ships and trains.

Shufti provides identity verification, KYC, AML screening and fraud prevention software for businesses worldwide.

SIBERLOCK is a cybersecurity and consultancy firm based in Turkey.

Siberson provides data security software for discovering, classifying, preventing loss of and monitoring sensitive data.

Connected vehicle software firm offering OTA updates, data logging and a vehicle security operations centre for fleets.

Siemba provides autonomous and expert-led penetration testing for security teams.