All companies

Invicti provides web application and API security testing software for enterprises.

Boutique security consultancy specialising in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.

IONIX provides a platform for managing external attack surface exposures.

Provides AI-driven email security to stop phishing, business email compromise, and deepfake attacks.

IRONVALD provides autonomous cybersecurity defence for critical infrastructure and industrial control systems.

IronVest provides intent verification for banks and fintechs to prevent fraud.

IronWiFi sells a cloud-based network identity platform for WiFi authentication and access control.

Iru is a software company that sells a unified platform for managing devices, identity and compliance.

ISC2 is a membership association that provides cybersecurity certifications, training and continuing education for professionals.

Island provides an enterprise browser that integrates security, IT, and AI-powered productivity for organisations.

Tool for building and updating threat analyses and risk assessments to ISO/SAE 21434, IEC 62443 and the CRA.

ITSecOps provides managed IT, cybersecurity and compliance services to organisations worldwide.

ITSS provides managed cybersecurity services including detection, response, and penetration testing from Dubai.

Ivanti provides software for managing and securing endpoints, IT services, networks and supply chains.

Jamf provides management and security software for Apple devices in organisations.

Software supply chain security and artifact management platform that blocks risky open source packages, scans for exploitable vulnerabilities and governs releases and AI models.

Joe Security provides automated and analyst-driven malware and phishing analysis through its Joe Sandbox platform.

Johanson Group is a CPA firm providing security and compliance audits.

Jones IT provides managed IT services, cybersecurity, and compliance support to businesses in the San Francisco Bay Area.

Jscrambler provides client-side security software that protects code and data in web browsers.

JumpCloud provides a cloud-based directory platform for managing identities, devices, and access.

Full-service London-based cybersecurity consultancy with CREST, CHECK, and NCSC accreditations delivering offensive testing, managed detection, and strategic advisory services.

Juniper Networks is now part of HPE.

K7 Computing Private Limited is a cybersecurity company that provides total security products.

Runtime protection agent and binary SBOM scanner for vehicle and device firmware, plus TARA and penetration testing.

Kaseya provides software for IT management, security and automation to IT teams and managed service providers.

Kaspersky develops antivirus and internet security software for home users and businesses.

Keeper Security provides a zero-trust platform for privileged access, secrets management, and password management.

KELA provides cyber threat intelligence and external threat exposure management from underground sources.

Keyfactor provides software for managing machine identities and cryptographic keys.

Test equipment maker whose device security lab, built on Riscure, tests chips, cards and vehicle electronics against side-channel and fault-injection attacks.

Provides email and network security services to organisations using Microsoft 365 and Google Workspace.

KirkpatrickPrice is a licensed CPA firm that performs cybersecurity audits and compliance assessments.

Kiteworks provides a platform for secure data exchange and governance across email, file sharing, and APIs.

KnowBe4 provides a platform for security awareness training and AI agent security to reduce human risk.

Builds a data platform that turns raw security telemetry into structured knowledge for AI.

Mexico-based cybersecurity firm delivering pen testing services across Latin America with international standards alignment.

Israeli-headquartered global cybersecurity consultancy with a UK presence, specialising in penetration testing and TIBER-EU red team exercises for Fortune 500 companies.

Cyber security consulting covering strategy and governance, security transformation and cyber threat management, plus cyber managed services and cloud security from member firms.

Global risk advisory firm with a 400+ person cyber practice. IR-led penetration testing that feeds active breach intelligence straight into test scoping.

Managed security operations, threat intelligence and incident response services delivered from global security operations centres by an IT infrastructure services provider.

Lakera provides security software that protects enterprise AI applications from prompt attacks and data leakage.

Denver-based offensive security boutique with a community-first red team culture. Home of PTES co-authors and the Continuous Red Team retainer.

Lasso Security provides a platform to secure AI agents and applications at enterprise scale.

LastPass provides password management and access control software for individuals and businesses.

Lattix Technologies Corp provides data security with encryption, policy, and audit trails.

Laucked is a French cybersecurity firm based in Toulouse that provides penetration testing and continuous security monitoring for small and medium-sized businesses.

LDL Security is a Brazilian cybersecurity company that specialises in penetration testing, red team exercises and compliance.

LegacyMind GmbH provides a firmware security platform that analyses firmware at the binary level.

Legion Security provides an agentic security operations platform that learns from SOC teams to automate investigations.