Find a pentest company with CRTO
43 companies have this certification
CRTO Certification Overview
Origin
The Certified Red Team Operator (CRTO) certification was created by Zero-Point Security, a cybersecurity training organization founded by Daniel Duggan (known as RastaMouse in the security community). Launched in 2020, the certification was developed to address a gap in practical, hands-on red team training. Zero-Point Security designed CRTO to move beyond theoretical knowledge and provide realistic adversary simulation experience, focusing on the tactics, techniques, and procedures actually used in modern red team operations.
Industry Value
The CRTO is valued in the cybersecurity industry for its practical, performance-based assessment approach that tests real-world red teaming skills rather than multiple-choice knowledge. The certification requires candidates to complete a 48-hour practical exam where they must compromise an Active Directory environment, demonstrating proficiency with tools like Cobalt Strike and command-and-control infrastructure. Employers appreciate CRTO holders because the certification validates hands-on offensive security capabilities, including lateral movement, privilege escalation, and persistence techniques that are directly applicable to red team engagements and penetration testing roles.
RedSeer Security
Cybersecurity company specializing in offensive security, red teaming, penetration testing, and social engineering; 13 employees with 7.1% YoY growth; founded 2018; based in Doral, Florida, USA; provides bespoke cybersecurity solutions with over two decades of expertise, focusing on safeguarding digital assets against sophisticated threats.
Illini Tech Services, Inc.
Managed IT service provider specializing in cybersecurity, networks, VOIP, and Starlink; offers comprehensive penetration testing services including external, internal, web app, wireless, and compliance assessments (HIPAA, FINRA, PCI-DSS); headquartered in Carlinville, Illinois, with 11 employees (+8.3% YoY growth), $1.5M revenue, and active regional presence.
TrustFoundry
IT services and consulting firm specializing in information security and penetration testing; 9 employees; founded 2014; headquartered in Overland Park, Kansas, USA; focuses on cybersecurity, application, network, and mobile security; serves organizations to mitigate cyber threats and malicious attacks.
Netragard, Inc
Netragard, Inc is a private cybersecurity company specializing in penetration testing and vulnerability research; with 9 employees, $10.1M annual revenue, founded in 2006, headquartered in Acton, Massachusetts, USA, offering cloud penetration testing, security advisory, and consulting services, and active in security research and community engagement.
Pathfynder
Cybersecurity company specializing in offensive and defensive cybersecurity services, including penetration testing; 8 employees; Founded 2019; Bozeman, Montana, United States; Veteran-owned small business with a focus on vulnerability assessment and risk mitigation.
Secure Network Technologies, Inc.
Cybersecurity company specializing in penetration testing, network security assessments, incident response, and forensic services; 7 employees, $21.7M revenue, founded 1997 in Syracuse, NY; offers advanced security engineering including social engineering, physical security, and open source intelligence; operates in cybersecurity, penetration testing, incident response, and physical security testing categories.
Stratascale
Cybersecurity and managed cybersecurity services provider based in Charlotte, NC; offers penetration testing, red team exercises, and offensive security testing as core services; HQ in Charlotte, NC, United States.
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Red Siege
Computer and Network Security company specializing in penetration testing and security consulting; 8 employees with 7.1% YoY growth, founded in 2017, headquartered in Longview, Texas, United States. Known for in-depth vulnerability analysis and risk assessment, Red Siege is a trusted industry leader in offensive security services.
ADO Security
Cybersecurity company specializing in awareness, defensive, and offensive security services; 14 employees; founded 2025; headquartered in Copenhagen, Denmark; offers penetration testing, vulnerability scanning, and cybersecurity awareness training.
ReTest Security
ReTest Security is a Danish cybersecurity company specializing in IT security testing, including penetration testing, vulnerability scanning, and security analysis; 17 employees, founded in 2019, headquartered in Herlev, Denmark. The firm emphasizes stress-free security testing services and maintains a web presence with 5,605 monthly visits and a global rank of #3,227,654.
Sekurno | Cybersecurity
Cybersecurity and IT consulting firm based in Tallinn, Estonia; 10 employees with 18.2% YoY growth; offers penetration testing services with detailed methodologies; specializes in smart IoT irrigation and water management solutions for sustainability.
Hackmosphere
Cybersecurity firm based in France; specializes in penetration testing services including cyber and physical pentests, with detailed scope and methodology; website in French and domain .fr confirm French headquarters.
Sekera
Cybersecurity company specializing in penetration testing and red teaming; based in France with headquarters confirmed by website language and company profile; offers risk management and cybersecurity solutions.
NSIDE ATTACK LOGIC GmbH
Cybersecurity company specializing in penetration testing, red teaming, and security assessments; 11 employees, founded 2014, headquartered in München, Germany; over 250 clients; services include web app hacking, IoT, SCADA, hardware hacking, and social engineering.
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binsec GmbH
Cybersecurity company specializing in penetration testing and security assessments; offers structured pentests for IT infrastructure, web, and mobile apps since 2013; based in Frankfurt, Germany with 3 employees and 20% YoY growth.
ProSec
German cybersecurity firm ProSec specializes in penetration testing and security audits; operates in Koblenz, Berlin, and München; offers web, mobile, and cloud security assessments with manual exploitation and realistic attack simulations.
Schutzpunkt GmbH
German cybersecurity company providing penetration testing and Red Teaming services; specializes in simulating real-world attacks to identify vulnerabilities and strengthen digital defenses.
Yekta IT GmbH
Germany-based private IT & cybersecurity company; 7 employees with 18.2% YoY growth, founded 2015 in Dortmund; specializes in penetration testing, cyber defense, and digital transformation; over 15 years of cybersecurity expertise, serving businesses and public institutions.
Tenendo
Tenendo is a private Irish-based IT & Services company specializing in penetration testing services, including application and infrastructure pentests; with 4 employees, founded in 2020, and a focus on security testing and threat intelligence.
Kōkishin
Cybersecurity firm based in Bologna, Italy, with 7 employees; specializes in penetration testing, incident response, digital forensics, offensive and defensive security, vulnerability management, and cloud security; offers innovative, non-traditional approaches with a global team focus; 33.3% monthly growth and 352 monthly web visits.
SafeBreach
Cybersecurity firm based in Bologna, Italy, specializing in penetration testing and breach simulation; offers automated pentest solutions, attack path validation, and exposure assessment with a focus on vulnerability detection and security posture testing.
My Voice
Italian cybersecurity company based in Bologna; provides penetration testing services as part of security assessments, positioning as a cybersecurity partner for SMEs; uses Italian VAT number 01813600663.
EHGI B.V.
Netherlands-based cybersecurity firm specializing in penetration testing and red teaming; actively conducts realistic attack simulations for medium and large organizations; registered in the Netherlands (KvK: 94674922) with an Amsterdam address at Papaverweg 34, 1032 KJ.
SharpSec
SharpSec is a Poland-based IT services and consulting company specializing in offensive security, including advanced penetration testing, red teaming, and security assessments; with 1 employee, it focuses on cybersecurity and strategic resilience for clients.
Zer0 Day Technologies
Romanian cybersecurity firm based in Bucharest; specializes in offensive security, penetration testing, and red teaming; offers active directory, web application, and network penetration testing services.
Istrosec
Cybersecurity company headquartered in Petržalka, Bratislava, Slovakia; provides threat intelligence, incident response, and cyber advisory services; offers penetration testing (ethical hacking); ISO/IEC 27001:2013 certified and TI accredited.
Redexploit, S.L.
Cybersecurity company specializing in Red Teaming, penetration testing, and hacking; based in Barcelona, Spain with 2 employees and experiencing 50% monthly growth. Provides security audits, continuous monitoring, vulnerability management, incident response, and social engineering services.
SECRA SOLUTIONS
Cybersecurity and IT consulting firm specializing in penetration testing, offensive security, and security architecture; 4 employees, founded 2025, based in Mostoles, Spain; offers web, IoT/OT, wireless, and cloud pentesting services, with a focus on strategic security and GRC.
Simovits Consulting
Cybersecurity consulting firm specializing in information and IT security; provides penetration testing, security reviews, vulnerability scans, and incident management with a focus on long-term client relationships. Founded in 1997, based in Stockholm, Sweden, with 14 employees and +5.3% YoY growth; known for adherence to industry standards like NIST SP800-115 and OWASP.
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Cypro Ab
Cypro Ab is a Sweden-based cybersecurity firm specializing in holistic digital protection; headquartered in Malmö, with capabilities in penetration testing supported by active job postings for senior pentesters and use of tools like Kali Linux and Metasploit.
Covenant Cyber
Australian-based private IT services and consulting company with 2 employees; specializes in offensive security and penetration testing services, including network, application, cloud, infrastructure, and human factor assessments; registered in Australia with ABN 37166574790 and domain covenantcyber.com.au.
Stingrai
Cybersecurity company specializing in penetration testing services; offers web application, network, and active directory security testing; founded in 2021, 6 employees, Toronto, Canada; +42.9% YoY growth.
Vumetric by TELUS
Vumetric by TELUS is a private cybersecurity company specializing in penetration testing and security audits; founded in 2007 with 16 employees and a -36.4% YoY growth. Based in Montréal, Canada, it offers services including external, internal, web application, and medical device penetration testing, as well as cloud security and SCADA cybersecurity assessments. The company has 16,557 monthly website visits and a global rank of #1,615,415, competing in the cybersecurity market with firms like simventions, nou systems, and lhp engineering solutions.
SecuSolutions Ltd.
Cybersecurity company specializing in penetration testing, managed security, and deep web analysis; 6 employees, $14.1M revenue, founded 2007 in Calgary, Canada; partners with cybersecurity providers to deliver essential security solutions for critical infrastructure.
iPSS inc.
Cybersecurity company based in Ottawa, Canada; specializes in penetration testing, social engineering, and red/blue team exercises; 17 employees, $19.3M annual revenue, founded in 2002, with a focus on IT security and advisory services.
Argon Cyber Security
Canada-based cybersecurity company specializing in penetration testing; offers advanced vulnerability assessments with a team of experts in AppSec, DevSecOps, pentesting, and cloud security. Known for high-quality, affordable services and a focus on vulnerability hunting.
Securityium
Securityium Ltd is a UK-based cybersecurity firm specializing in penetration testing and vulnerability assessments; with 2 employees and a 57.1% YoY workforce decline, it focuses on high-security testing services for enterprise clients. Founded in 2020 and headquartered in London, it maintains a modest online presence with 2,219 monthly visits and a global rank of #6,583,875.
Hackyde Limited
UK-based cybersecurity company specializing in penetration testing; led by professionals with 23+ years of experience; holds CREST and OSCP certifications; based in Birmingham, UK.
Ibliss Digital Security
Brazilian cybersecurity firm based in São Paulo; provides penetration testing, security diagnostics, compliance validation, and staff training; confirmed presence of pentest services on multiple pages, with a focus on security assessments and process improvements.
Secure D Global
Cybersecurity company specializing in security assessment, penetration testing, incident response, and compliance; 37 employees with 20.5% YoY growth; founded in 2018; headquartered in Bangkok, Thailand; operates across Southeast Asia with offices in Kuala Lumpur and Bangkok.
Secuna
Cybersecurity company specializing in penetration testing and vulnerability assessments; 11 employees with 22.2% YoY growth; founded 2017; headquartered in Taguig, Philippines. Secuna is a leading offensive security platform empowering organizations to proactively identify and resolve vulnerabilities.
hackstreetboys
Cybersecurity company specializing in penetration testing, red teaming, and capture the flag activities; based in Manila, Philippines, with 1 employee and a focus on knowledge-sharing and international CTF participation.
LOGIQUE (PT. Logika Sarana Teknologi)
Indonesian IT & Services company specializing in web development, digital marketing, and cybersecurity; offers penetration testing, vulnerability assessments, and security testing services. 46 employees, founded 2017, based in Jakarta Selatan, Indonesia; 16,557 monthly website visits, global rank #1,721,614.