Find a Pentest Company in Washington
There are 38 penetration testing companies in Washington. 92% are small firms (50 or fewer employees) and 8% are larger organizations.
Section9Labs
Security consulting company specializing in penetration testing, source code audits, and vulnerability management; based in Seattle, WA, founded in 2013, with 2 employees. Offers network, web, mobile, and APT-style penetration tests, along with reverse engineering services.
Anvil Secure
Anvil Secure is a private cybersecurity company specializing in penetration testing, embedded systems, and vulnerability research; with 34 employees (+14.6% YoY growth), founded in 2016 and based in Seattle, Washington. They focus on bespoke security consulting, including code review, reverse engineering, and risk mitigation, serving a global client base. The company has 1,840 monthly website visits and ranks #7,648,932 globally.
Achilleus
Cybersecurity company specializing in penetration testing and security consulting; 6 employees with -8.3% YoY growth; $134K annual revenue; based in Vancouver, Washington, USA; offers ethical hacking, vulnerability assessment, threat management, and security auditing services.
PurpleSec
PurpleSec LLC is a private cybersecurity firm based in Washington, D.C., founded in 2019, with 3 employees and +133.3% YoY growth. Specializing in penetration testing, vulnerability management, and risk assessments, it serves SMBs and startups. The company has 73,014 monthly website visits, a global rank of #505,211, and competes within the cybersecurity consulting and network security sectors.
True Positives
Cybersecurity company specializing in managed application security testing and automated vulnerability scanning; 6 employees, founded 2020, based in Chehalis, Washington, USA; offers expert-led penetration testing with real-world attack validation, focusing on high-value web applications, and operates in the software security and MSSP sectors.
Leviathan Security Group
Cybersecurity company specializing in penetration testing, vulnerability assessments, and risk management; 27 employees, $3.2M annual revenue, founded 2006, headquartered in Tukwila, Washington, USA; known for expertise in secure development, threat modeling, and compliance.
Mirai Security
Cybersecurity company specializing in governance, risk management, compliance, cloud security, and application security; offers penetration testing services supported by case studies; 20 employees with 12.5% YoY growth; headquartered in Seattle, Washington, USA.
Stop wasting time on security questionnaires
ResponseHub uses AI to automate your security questionnaire responses. 100% confidence, save days, unblock deals.
Rhino Security Labs, Inc
Private information services company specializing in penetration testing; focuses on cloud (AWS, GCP, Azure), network, and web application pentesting with manual, deep-dive engagements. Founded in 2013, headquartered in Seattle, WA; 6 employees; $2.5M annual revenue; recognized as a top penetration testing firm with active involvement in security advisories.
INTUITUS Corp.
Cybersecurity company specializing in managed detection and response (MDR), penetration testing, and comprehensive security solutions; 7 employees with 27.3% YoY growth, founded 2020, headquartered in Port Orchard, Washington, US; provides red team penetration testing and continuous threat mitigation.
Advantage Partners
Cybersecurity company specializing in security and compliance services for tech firms; offers penetration testing services as confirmed by their website and PR release; 20 employees with 114.3% YoY growth; founded in 2023; headquartered in Seattle, Washington, USA.
Allwire Technologies
Allwire Technologies is a private computer networking and IT security firm founded in 2011, with 4 employees and 16.7% YoY growth; based in Sammamish, Washington. They offer hybrid infrastructure solutions, act as outsourced CIOs, and perform penetration testing, emphasizing secure, compliant IT services.
Casaba Security
Cybersecurity professional services firm specializing in penetration testing, cybersecurity testing, and governance for AI, cloud, and application security; 30 employees with 5.7% YoY growth, $29.6M revenue; based in Redmond, Washington, founded in 2002.
Securitybricks, Inc.
Cybersecurity company specializing in penetration testing, offensive security, and compliance support; 14 employees; headquartered in Seattle, Washington, with a focus on cloud security, GRC, and application security services.
Maxwell IT
IT services and consulting company specializing in managed IT, cloud hosting, and security; provides penetration testing services and operates in Washington state with 17 employees, $11.2M revenue, founded in 2005 in Seattle.
Advertise on pentest.fyi
You could be here!
Caliber Security Partners
Cybersecurity company specializing in penetration testing and information security services; 7 employees with 50% YoY growth, $3.5M revenue, founded 2010 in Tacoma, WA; serves tech, finance, healthcare, government, and cloud sectors.
Kaiju Security
Cybersecurity and security consulting firm specializing in penetration testing, red team operations, and threat solutions; 2 employees with a 16.7% decline in workforce; based in Edmonds, Washington, USA.
TorchLight
Cybersecurity company specializing in penetration testing, compliance, and security services for regulated industries; 13 employees with 106.3% YoY growth; founded 2007; Spokane Valley, WA; offers managed detection, HIPAA/PCI compliance, pen testing, and security assessments.
Brownstone Consulting Firm
IT services and cybersecurity consulting firm specializing in security assessments, audits, and CMMC advisory; offers penetration testing services; 5 employees with 41.7% YoY growth; based in Washington, DC, founded 2010.
Holmes Risk Management
Security and investigations company specializing in non-traditional security, investigation, and intelligence services; offers physical penetration testing, covert infiltration, onsite reconnaissance, and door bypass; founded 2018; 2 employees; headquartered in Tukwila, Washington, United States.
IOActive, Inc.
Cybersecurity company specializing in penetration testing and full-stack security assessments; 83 employees, $25M revenue, founded 1998, headquartered in Seattle, WA; serves critical infrastructure, energy, finance, healthcare, and more; recognized for research-driven security services and red team operations.
TechStorm PC
IT services and consulting firm specializing in Microsoft 365, cybersecurity, managed cloud, and custom software development; provides penetration testing services; based in Bellingham, Washington, founded 2013, with 3 employees and -50% YoY growth • 1,207 monthly website visits; global rank #11,000,577; focuses on the life sciences industry.
Premier Risk Solutions LLC
Security services provider based in Maple Valley, WA; specializes in penetration testing and physical security red team exercises; engages in proactive security consulting and testing activities.
Castling Security
Cybersecurity firm based in Seattle, Washington, specializing in penetration testing and red team services; offers vulnerability assessments for networks and web applications to enhance security posture.
CyberStreams
IT support and cybersecurity company based in Tukwila, Washington, with offices in Seattle and Austin; provides managed IT, help desk, and penetration testing services; headquartered at 951 Industry Dr, Tukwila, WA 98188.
Verification Labs
Cybersecurity company based in Seattle, Washington; specializes in advanced penetration testing for complex environments, including proprietary protocols, large-data applications, and cloud platforms; offers comprehensive security assessments for organizations with intricate security needs.
Paragon Networks
Paragon Networks is a private computer and network security company based in Olympia, Washington, USA, founded in 2018. It has 2 employees with 100% YoY growth and offers managed IT services, network security, help desk, data backup, and penetration testing, positioning itself as a focused MSP with a strong emphasis on security and client support.
Crystal Peak Security
Cybersecurity firm based in Seattle, Washington, specializing in penetration testing and offensive security services; offers free risk assessments and vulnerability identification with remediation guidance; founded with a focus on safeguarding customer data and business assets.
Kalles Group
IT Services and IT Consulting company specializing in cybersecurity, risk management, automation, and systems; 15 employees, $6.1M annual revenue, founded 2010, headquartered in Seattle, WA, USA. Provides penetration testing services with certified ethical hackers and vulnerability assessments.
Devfuzion
IT services and cybersecurity firm based in Kennewick, Washington; provides managed IT, cybersecurity, and penetration testing services with 11 employees, $5.1M revenue, and 20% YoY growth; specializes in ethical hacking and network vulnerability assessments.
Stop wasting time on security questionnaires
ResponseHub uses AI to automate your security questionnaire responses. 100% confidence, save days, unblock deals.
Attentus Tech
Managed services provider specializing in tailored IT solutions and cybersecurity; offers penetration testing services as part of their cybersecurity capabilities; headquartered in Renton, Washington, with multiple Washington-based addresses; over 20 years of experience in IT support and security.
KANE ADVISORS
Risk management and business intelligence analytics company based in Chelan, Washington, with 2 employees; founded in 2000. Specializes in risk mitigation, cybersecurity, and penetration testing services to help organizations thrive in volatile environments.
RySec LLC
IT Services and IT Consulting company specializing in cybersecurity; provides penetration testing, cybersecurity consulting, and tailored solutions for small businesses; founded 2024; based in Port Orchard, Washington, USA; 1 employee.
Design I.T. Solutions LLC
Managed IT services provider headquartered in Spokane, Washington; offers cybersecurity, cloud, and support solutions with explicit penetration testing services for security assessments.
.png)
Oleria
Oleria is a Washington-based security platform specializing in usage-aware identity security; it offers fine-grained, usage-aware access control for all identity types and performs regular penetration testing (at least annually) to ensure security integrity.
Prelude Security
Cybersecurity company based in Seattle, Washington, specializing in penetration testing and continuous security testing; offers container security probes, red team automation, and stealthy penetration testing; founded in 2025; provides agentless security visibility and testing capabilities.
B/Net Systems
Managed IT services provider based in Washington, DC; nearly 30 years of experience supporting SMBs; offers scalable IT solutions, cybersecurity, and penetration testing services, collaborating with security partners for assessments.
Fusiontek
Cybersecurity and IT services provider specializing in network security; headquartered in Kirkland, Washington, with explicit penetration testing services including attack simulation and consulting capabilities.
adaQuest
Cybersecurity firm headquartered in Bellevue, Washington; provides penetration testing services including a 4-week assessment; Microsoft Gold Partner for Security & Compliance; specializes in security and compliance solutions.