Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using existing security tools where appropriate.
DeepSeas helps organizations identify, contain, and reduce cyber risk through integrated threat detection, exposure management, offensive testing, incident response, and strategic security guidance. With approximately 30 years of cyber defense experience, DeepSeas connects security operations across endpoint, network, cloud, identity, email, and operational technology environments so teams can move from fragmented alerts to measurable risk reduction.

Integrated services help organizations detect threats, assess exposure, test defenses, and strengthen security operations.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using existing security tools where appropriate.
Experts examine endpoint, identity, network, cloud, and email telemetry for evidence of current or historical intrusion, then provide findings and immediate remediation guidance.
Continuous attack-surface monitoring, vulnerability management, dark web intelligence, and prioritization help identify where your organization is most likely to be compromised next.
Ethical hackers conduct controlled testing across networks, cloud environments, applications, APIs, and physical or social vectors to reveal attack paths automated tools miss.
Experienced responders support preparation, detection, containment, recovery, forensic analysis, threat research, and post-incident improvements when active threats require decisive action.
DeepSeas builds practical security programs covering governance, controls, policies, metrics, operating processes, risk management, and continuous improvement around business priorities.
Threat mitigation works best when detection, testing, intelligence, response, and governance inform one another. DeepSeas combines these capabilities into a coordinated defense model that helps organizations identify likely attack paths, validate whether controls work, contain active threats, and prioritize remediation. Coverage can extend across IT, cloud, operational technology, mobile, and BYOD environments while supporting the tools and governance already in place.

See how coordinated cybersecurity capabilities help organizations reduce exposure, improve readiness, and respond with confidence.
DeepSeas connects expert guidance with operational security capabilities to deliver practical, measurable cyber defense.
Approximately 30 years of cyber defense experience support informed decisions across complex security environments.
24/7 monitoring, detection, and response help organizations address threats without building every capability internally.
One cyber defense model connects advisory, offensive security, intelligence, MDR, SOC operations, and GRC.
Bring-your-own-stack support helps teams use existing SIEM, EDR, and CNAPP investments without unnecessary replacement.
Experienced cybersecurity practitioners guide strategy, operations, response, and 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.
Threat mitigation is the process of reducing the likelihood or impact of cybersecurity threats. It can include identifying vulnerabilities, monitoring for suspicious activity, testing defenses, strengthening controls, preparing response plans, and addressing confirmed risks. Effective mitigation combines technology, trained security professionals, governance, and remediation so an organization can reduce exposure before an incident and limit damage if an attacker gains access.
Talk with DeepSeas experts about your threat mitigation priorities and current security environment.
Certification held by DeepSeas specialists.
Recognition as a top 40 MDR provider by Gartner.
Recognition as a Leader and top-five provider in the 2024 Frost Radar market.
Award for Competitive Strategy Leadership in Managed Detection and Response.
Recognition through the 2024 Global MDR Best Practices Award for Strategy.
Share your security priorities with DeepSeas and discuss practical next steps for reducing cyber risk.
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