Red Teaming Providers
Red teaming is an advanced adversary simulation exercise that tests an organisation's detection and response capabilities by emulating real-world threat actors. Unlike traditional penetration testing, which focuses on finding vulnerabilities within a defined scope, red team engagements are objective-driven and test the full attack lifecycle from initial reconnaissance through to achieving specific goals such as accessing crown jewel assets, exfiltrating sensitive data, or compromising critical systems.
Red teams use the same tactics, techniques, and procedures (TTPs) as real adversaries, mapped to frameworks like MITRE ATT&CK, and operate with minimal knowledge to simulate a realistic attack. Red teaming tests not just technical controls but also people and processes, evaluating how security teams detect, investigate, and respond to threats.
This makes red teaming particularly valuable for organisations with mature security programmes that want to validate their defensive capabilities against sophisticated attacks. Red team exercises may follow structured frameworks like CBEST, TIBER-EU, or STAR, and are commonly required in highly regulated industries such as financial services, defence, and critical infrastructure.
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.
Red Teaming FAQs
What is the difference between red teaming and penetration testing?+
Penetration testing finds vulnerabilities within a defined scope. Red teaming is objective-driven, testing detection and response capabilities by simulating realistic attacks across the entire organisation with minimal constraints.
How long does a red team engagement last?+
Red team engagements typically last 4-12 weeks, allowing time for realistic reconnaissance, attack execution, and thorough testing of detection and response capabilities.
Is my organisation ready for red teaming?+
Red teaming is most valuable for organisations with mature security programmes including a SOC, incident response procedures, and endpoint detection. If basic security controls are lacking, penetration testing may be more appropriate first.