Managed Detection Response
DeepSeas provides 24/7 detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments using your existing security tools.
DeepSeas delivers complete digital security services and solutions for organizations that need stronger visibility, faster response, and measurable risk reduction. From managed detection and response to penetration testing, compliance support, cloud security, and strategic advisory, our expert-led approach helps protect critical systems, support business growth, and make cybersecurity a strategic advantage across the United States.
Integrated cybersecurity services help organizations prevent, detect, investigate, and respond to evolving digital threats.
DeepSeas provides 24/7 detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments using your existing security tools.
Expert assessments identify strengths, weaknesses, and prioritized risks across systems, processes, people, and controls, creating a defensible plan for improvement.
Ethical hackers use penetration testing, red teaming, and adversary emulation to expose attack paths and validate whether security controls work as intended.
Continuous attack surface monitoring, vulnerability management, and dark web intelligence help prioritize the exposures most likely to lead to compromise.
DeepSeas designs and operates compliance programs with control mapping, evidence management, gap assessments, and ongoing support for organizational requirements.
Experienced advisors and vCISO support help leaders shape security strategy, governance, budgets, executive reporting, and long-term risk reduction.
DeepSeas connects strategic advisory, offensive security, threat intelligence, managed detection and response, and governance into a coordinated security program. Services can work with the SIEM, EDR, and CNAPP tools your organization already owns, helping reduce fragmented operations while improving visibility and response. With coverage spanning IT, cloud, operational technology, mobile, and BYOD environments, DeepSeas helps organizations turn cybersecurity into a strategic advantage.
Explore how integrated cybersecurity capabilities support stronger defenses, clearer priorities, and more confident security decisions.
"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 combines experienced practitioners, integrated capabilities, and measurable outcomes in one cybersecurity partner.
Nearly 30 years of cyber defense experience supports practical guidance and informed security decisions.
24/7 monitoring, detection, and response help organizations address threats as they emerge.
Advisory, testing, intelligence, response, and compliance work together instead of creating disconnected security queues.
Bring-your-own-stack support helps US organizations use established SIEM, EDR, and CNAPP investments.
Experienced cybersecurity leaders and practitioners deliver practical, outcome-focused guidance.
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.
DeepSeas provides managed detection and response, endpoint and network monitoring, security risk assessments, penetration testing, red teaming, exposure management, vulnerability management, incident response, compliance readiness, governance support, strategic advisory, and vCISO services. These capabilities can be combined into a broader cybersecurity program or selected individually according to your organization’s risks, existing tools, operating model, and security objectives.
Speak with DeepSeas experts about your organization’s cybersecurity priorities.
Recognition as a top 40 Managed Detection and Response provider.
2024 Leader and top-five provider recognition in the global MDR market.
2024 Best Practices Competitive Strategy Leadership Award for MDR.
2024 award recognizing strategy in managed detection and response.
ISO Lead Auditor certifications held by DeepSeas specialists.
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