All companies

Recorded Future provides a threat intelligence platform that indexes open, dark and technical sources. Acquired by Mastercard for $2.65bn.

Embedded firmware hardening and runtime monitoring for devices, including Symbiote protection for vehicle ECUs and calibration data.

Zscaler provides cloud-based security, network and transformation services for enterprises.

Open source software company whose Advanced Cluster Security product protects Kubernetes and container workloads, alongside Red Hat Enterprise Linux and OpenShift.

Red Piranha provides cybersecurity technology that consolidates protection, detection, and response across cloud, on-prem, and endpoints.

Red Points provides a SaaS platform for brand protection, anti-counterfeiting, anti-piracy, and digital risk enforcement.

Red Sift provides email, domain and web security services to help organisations implement security protocols.

Denver-based boutique pen testing firm with senior-only testers. Personalised engagements across penetration testing, red teaming, and vulnerability management.

RedLattice provides cyber capabilities for military, intelligence and law enforcement missions.

US-wide pen testing firm serving major cities including Atlanta, Dallas, Denver, Houston, and Miami with security assessments.

London-based cybersecurity provider, now part of Kroll, delivering CREST-accredited penetration testing, managed detection and response, and incident response with a 550-strong cyber team.

CREST-certified and PCI QSA penetration testing consultancy in London, delivering offensive security and compliance services across 25+ countries with research-driven expertise.

Miami-based cybersecurity firm with 300+ employees and deep healthcare/HIPAA expertise. Delivering pen testing since 2000.

RedTeam Hacker Academy is a cybersecurity training company that offers hands-on courses in ethical hacking and related fields.

REJIS provides technology solutions for public safety and government agencies.

ReliaQuest provides an AI security operations platform for enterprises to detect and respond to threats.

RemoteThreat provides an offensive cyber operations platform for red teams and government mission teams.

Report URI is a client-side security platform that monitors and controls what runs in users' browsers.

Revelion provides an autonomous AI pentester that simulates attacks to validate exploitability across estates.

Reversec provides cybersecurity consulting services, including penetration testing and resilience development.

ReversingLabs provides software supply chain security and threat intelligence to verify and secure enterprise software.

Cloud security penetration testing specialists known for the Pacu AWS exploitation framework and deep expertise across AWS, Azure, and GCP environments.

Risk Management Advisory provides governance, risk and compliance advisory services for security standards.

Riskified provides AI-powered fraud prevention and chargeback protection for ecommerce merchants.

RiskRecon provides cybersecurity ratings and assessments to help organisations manage third-party and supply chain risk.

RoboForm is a password manager that stores and generates passwords and fills online forms.

RoboShadow provides daily vulnerability scanning and automated remediation for internal and external networks.

RSA provides identity and access management solutions for government, financial, and high-assurance organisations.

Generates SBOMs for embedded code and hardens vehicle ECU software against memory-based exploits at runtime.

runZero provides exposure management software that discovers and profiles assets across IT, OT, IoT, cloud and mobile networks.

Korean maker of V2X security software, including certificate management servers, vehicle security clients and misbehaviour detection.

SafeBreach provides a platform that validates security controls and manages cyber exposure for enterprises.

Safeguard is a software supply chain security platform.

SafeHabits provides managed security awareness training and human risk management for organisations.

Thales provides cybersecurity products and services to protect data, applications, and identities.

Safetica provides AI-powered data protection, insider risk, cloud security, and compliance software.

SailPoint provides identity governance and security software for human, machine, and AI identities.

Salt Security provides a platform to discover and secure AI agents, MCP servers, and APIs.

Award-winning Cheltenham-based cybersecurity consultancy with NCSC CHECK Green Light status and CREST approval, specialising in defence, government, and critical national infrastructure security.

Next generation firewalls, endpoint protection, secure web gateway, NDR, SASE and managed detection and response, plus hyperconverged infrastructure and virtual desktop products.

SANS Institute provides cybersecurity training, certifications, and resources to professionals and organisations worldwide.

Customer identity and access management for B2C and B2B, with passwordless login, consent management and customer profiles, alongside SAP's enterprise business software.

Saviynt provides identity governance and security for human and non-human identities across applications and data.

Sawmills provides an agentic telemetry management platform.

UK automotive consultancy that runs vehicle penetration tests, threat assessments and anti-theft testing for carmakers.

US cybersecurity consulting, audit and testing firm founded in 2004, focused on community banks and credit unions, with external, internal, web application, wireless and PCI DSS penetration testing plus CMMC Level 1 and 2 readiness work.

Scalefusion provides unified endpoint management, zero trust access, and endpoint security for businesses.

ScanTitan provides website security scanning, malware removal, and external attack surface management for businesses.

The largest CPA-firm-based cybersecurity assessor in the US. Unique in holding FedRAMP 3PAO, PCI QSA, HITRUST, ISO 27001, and SOC attestation authority simultaneously.

Schwarz Digits is the IT and digital division of Schwarz Group.