Penetration Testing
DeepSeas uses real attacker tradecraft to test whether defenses hold across defined environments, producing evidence-based findings and practical remediation guidance.
DeepSeas helps organizations identify and reduce web security risk through expert-led penetration testing, attack simulations, vulnerability assessments, and application security reviews. Testing combines human analysis with practical remediation guidance to uncover weaknesses automated tools may miss. With approximately 30 years of cyber defense experience and support for organizations worldwide, DeepSeas turns security findings into measurable, actionable improvements.
Expert-led assessments identify exploitable weaknesses across applications, infrastructure, cloud environments, and human-facing attack paths.
DeepSeas uses real attacker tradecraft to test whether defenses hold across defined environments, producing evidence-based findings and practical remediation guidance.
Manual testing examines authentication, authorization, business logic, data exposure, input handling, APIs, and third-party components that automated scanners may overlook.
Assessments examine cloud identity, permissions, configurations, exposed services, APIs, secrets handling, logging, and attack paths across IaaS, PaaS, and SaaS environments.
Network penetration testing evaluates external and internal attack paths across infrastructure, Active Directory, APIs, wireless systems, cloud environments, and physical access points.
Human-led adversary emulation tests detection and response against realistic attack techniques, helping organizations understand which actions their defenses detect or miss.
Phishing, vishing, smishing, and physical assessments evaluate how people, processes, and technical controls respond to credible attempts to obtain access or sensitive information.
DeepSeas combines automated scanning with manual validation by experienced ethical hackers to reveal meaningful attack paths, logic flaws, configuration weaknesses, and control gaps. Testing can cover web applications, APIs, cloud environments, network infrastructure, people, and physical access points. Findings include evidence, technical context, and remediation guidance so security and development teams can prioritize improvements based on actual risk rather than an undifferentiated list of alerts.
See how practical testing and clear findings help organizations strengthen defenses and reduce cyber risk.
"In cybersecurity we were not looking for a vendor, we were looking for a trusted partner that could push us, challenge us, and ensure we got better at protecting our systems every day. We found that partner with DeepSeas, and they have helped us be far smarter and better than..."
DeepSeas pairs broad cyber defense capabilities with practical, outcome-focused security testing.
Approximately 30 years of cyber defense experience supports practical testing and security recommendations.
Experienced ethical hackers investigate meaningful weaknesses that automated scanning alone may not identify.
Testing spans applications, networks, cloud, people, physical access, and adversary behavior.
Reports provide evidence and remediation guidance that security and development teams can use.
Experienced cybersecurity practitioners support testing, strategy, and measurable risk reduction.
Chief Executive Officer
Lewie Dunsworth serves as Chief Executive Officer of DeepSeas, leading the company's mission to make cybersecurity a strategic advantage for nearly 1,000 organizations worldwide. Under his leadership, DeepSeas has grown into a recognized leader in Managed Detection and Response, earning recognition from Gartner and Frost & Sullivan as a top provider in the industry. Lewie drives the company's vision across its six-layer cyber defense stack, spanning strategic advisory, offensive security, threat intelligence, managed detection and response, the CyberFusion SOC, and governance, risk and compliance. He is committed to ensuring that enterprise, mid-market, government, and education clients receive proactive, measurable, and customized cybersecurity outcomes. Lewie's leadership reflects nearly three decades of industry experience and a steadfast focus on client trust and operational excellence.
CISM, CIPP/E, SANS GCIH, GIAC, HITRUST
Keith Robertson brings 25 years of governance, risk management, and compliance experience to DeepSeas, including prior service as a Fortune 500 Chief Security Officer and Enterprise Risk Officer. He holds an impressive array of certifications, including CISM, CIPP/E, SANS GCIH, GIAC, and HITRUST, reflecting his comprehensive expertise across security management, privacy, incident handling, and healthcare compliance. Keith's executive-level experience gives him a unique perspective on enterprise risk, allowing him to help DeepSeas clients align cybersecurity strategy with broader business objectives. His background in high-stakes corporate security leadership positions him well to guide organizations through complex governance challenges and regulatory requirements. Keith is committed to helping clients build mature, enterprise-grade risk management programs that support long-term security and compliance success across diverse industries.
CISSP, CCSK, Licensed Attorney
Sean Duffy combines 25 years of cybersecurity experience with a unique legal background, holding both CISSP and CCSK certifications as well as a license to practice law. A United States Navy veteran, Sean brings a disciplined, mission-focused approach to his work advising C-suite executives and boards of directors on cybersecurity strategy and risk. His legal expertise allows him to provide clients with a nuanced understanding of regulatory and liability considerations alongside technical security guidance, a combination that is especially valuable for organizations navigating complex compliance landscapes. Sean's extensive advisory experience makes him a trusted voice for senior leadership teams seeking to understand cybersecurity risk in business terms. His military background and legal training reflect the depth and diversity of expertise that defines the DeepSeas team.
CISSP, HITRUST
Matt Lammers is an experienced CISO and IT risk executive who brings both deep technical certification and management consulting experience to DeepSeas. Holding CISSP and HITRUST credentials, Matt has built a career helping organizations strengthen their cybersecurity posture while managing enterprise-level risk. His consulting background equips him with strong skills in translating complex security concepts into actionable business strategies for executive stakeholders. Matt's international perspective, including his status as an Australia permanent resident, gives him valuable insight into global compliance and security considerations that benefit DeepSeas clients operating across borders. He is dedicated to helping organizations build resilient, well-governed cybersecurity programs that align with both operational needs and executive priorities, reinforcing DeepSeas' commitment to customized, outcome-driven security solutions.
Web security testing evaluates applications, APIs, supporting infrastructure, and related controls for weaknesses that attackers could exploit. DeepSeas combines automated scanning with manual testing to identify issues such as authentication gaps, authorization flaws, business logic problems, data exposure, and vulnerable components. The work produces evidence-based findings and remediation guidance that teams can use to improve security.
Talk with DeepSeas about your environment, objectives, and assessment requirements.
Named certification held by DeepSeas specialists.
2023 recognition as a top 40 MDR provider.
2024 Frost Radar Leader and top-five provider recognition.
2024 award for MDR competitive strategy leadership.
2024 award recognizing MDR strategy.
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