Best Red Teaming Companies
Red teaming goes beyond traditional penetration testing by simulating realistic, end-to-end attacks against your organisation. The best red teaming companies employ advanced adversary simulation techniques mapped to frameworks like MITRE ATT&CK, testing your detection and response capabilities against sophisticated threat actors.
These providers specialise in red team engagements including CBEST, TIBER-EU, and bespoke adversary simulations. They are recommended for organisations with mature security programmes that want to validate their defensive capabilities.
SECFORCE
Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.
NCC Group
Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.
Nettitude
CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.
NetSPI
Leading penetration testing firm with the Resolve platform for continuous attack surface management, trusted by nine of the top ten US banks.
Trustwave
Global managed security provider with the elite SpiderLabs penetration testing team and deep PCI DSS compliance expertise.
Bridewell
Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.
Pentest People
CREST and CHECK-accredited UK penetration testing firm with an innovative SecurePortal platform and transparent pricing for mid-market organizations.
Mandiant
World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience.
Bishop Fox
Premier US-based offensive security firm known for elite penetration testers, cutting-edge research, and the Cosmos continuous attack surface management platform.
Rapid7
Creators of Metasploit offering enterprise penetration testing integrated with their comprehensive vulnerability management and security operations platform.
WithSecure
Leading European cybersecurity firm offering penetration testing with deep expertise in EU regulatory compliance including GDPR, NIS 2, and TIBER-EU.
Claranet
CREST and CHECK-accredited European managed services provider delivering penetration testing with deep infrastructure and cloud hosting expertise.
Integrity360
CREST-accredited pan-European cybersecurity services provider delivering penetration testing and managed security from Dublin with a strong UK and Ireland presence.
Black Hills Information Security
Community-driven penetration testing firm known for free security education, open-source tools, Wild West Hackin' Fest, and practical offensive security services.
SEC Consult
Leading European cybersecurity consultancy from Vienna with a prolific vulnerability research program and deep expertise in IoT and embedded systems security.
CrowdStrike
Global cybersecurity leader leveraging world-class threat intelligence from the Falcon platform to deliver intelligence-led penetration testing and red teaming.
IOActive
Elite boutique security consultancy specializing in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.
Secureworks
Dell Technologies-backed cybersecurity firm with elite Counter Threat Unit intelligence informing enterprise penetration testing and adversary simulation.
Rhino Security Labs
Cloud security penetration testing specialists known for the Pacu AWS exploitation framework and deep expertise across AWS, Azure, and GCP environments.
Praetorian
Offensive security firm founded by former DoD professionals, offering elite penetration testing and the Chariot continuous attack surface management platform.
Offensive Security
Creators of OSCP, Kali Linux, and Exploit-DB, offering elite penetration testing services from the team that trains the world's ethical hackers.
Synack
FedRAMP-authorized crowdsourced penetration testing platform combining vetted elite hackers with AI-powered Hydra technology for continuous security testing.
Aon Cyber Solutions
Cybersecurity consulting division of global insurance leader Aon, uniquely combining penetration testing with cyber risk quantification and insurance expertise.
Best Red Teaming Companies — FAQs
What is red teaming and how does it differ from pen testing?+
Red teaming is an objective-driven adversary simulation that tests your organisation's detection and response capabilities. Unlike pen testing, which focuses on finding vulnerabilities within a defined scope, red teaming simulates realistic attacks across the full kill chain to test people, processes, and technology.
How much does a red team engagement cost?+
Red team engagements typically cost between £30,000 and £150,000+ depending on scope, duration, and complexity. Engagements usually last 4-12 weeks. Regulated frameworks like CBEST and TIBER-EU tend to be at the higher end.
Is my organisation ready for red teaming?+
Red teaming is most valuable when you have mature security controls including a SOC, EDR solutions, incident response procedures, and network segmentation. If basic security controls are lacking, traditional pen testing may be more appropriate first.
What is CBEST and TIBER-EU?+
CBEST is the Bank of England's framework for intelligence-led red teaming of financial institutions. TIBER-EU is the European Central Bank's equivalent framework. Both require specialised, accredited red team providers and are mandatory for significant financial entities.