Managed Detection Response
DeepSeas provides continuous threat detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, working inside the tools your organization already owns.
DeepSeas delivers innovative cybersecurity solutions that help organizations detect threats, reduce exposure, strengthen resilience, and make security a strategic advantage. From managed detection and response to offensive testing, risk assessment, governance, and advisory services, our expert-led approach connects strategy with operations across IT, cloud, identity, email, mobile, and OT environments.

Integrated cybersecurity capabilities connect expert guidance, continuous monitoring, testing, risk management, and compliance support.
DeepSeas provides continuous threat detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, working inside the tools your organization already owns.
Continuous network visibility helps analysts identify lateral movement, command and control, data staging, unmanaged devices, and activity across environments where endpoint agents may not be installed.
Ethical hackers use penetration testing, adversary emulation, red teaming, and social engineering assessments to expose attack paths and validate whether defenses work against realistic threats.
DeepSeas evaluates assets, controls, processes, and potential attack scenarios to produce a prioritized, defensible view of what to address first and why it matters.
Build a scalable cybersecurity program with assessments, policies, governance, maturity roadmaps, operating processes, metrics, and practical guidance aligned to organizational risk.
Continuous controls monitoring, evidence organization, gap assessments, policy development, and advisory support help organizations maintain audit-ready security and compliance programs.
DeepSeas brings strategy, technology, and human expertise together through a complete cyber defense model. Organizations can combine managed detection and response, offensive security, threat intelligence, exposure management, advisory, and governance support around their existing tools and operating needs. The result is a more connected view of risk, faster prioritization, stronger readiness, and measurable progress toward a security program that supports business goals.

See how integrated cybersecurity expertise helps organizations reduce uncertainty, strengthen defenses, and move forward with confidence.
DeepSeas combines long-standing cyber defense experience with modern, measurable, and customized security operations.
Connect strategy, offensive security, intelligence, monitoring, response, governance, and compliance through one coordinated partner.
Continuous monitoring, detection, and response help organizations maintain visibility beyond the limits of internal staffing.
Bring-your-own-stack support helps teams extend current SIEM, EDR, and CNAPP investments without unnecessary replacement.
Nearly 30 years of cyber defense experience supports enterprise, mid-market, government, education, and regulated organizations.
Experienced practitioners turn complex cyber risk into practical, measurable action.

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 integrated cybersecurity services including managed detection and response, network detection and response, endpoint monitoring, exposure management, penetration testing, red teaming, compromise assessment, strategic advisory, virtual CISO support, governance and compliance, vulnerability management, incident response, and security program development. Services can be combined into a customized program aligned with your organization’s risk, existing tools, operating model, and security priorities.
Talk with DeepSeas about practical, measurable security improvements.
Recognition as a top 40 MDR provider.
Leader and top-five provider recognition.
Competitive Strategy Leadership Award recognition.
Global MDR Best Practices Award recognition.
Share your priorities with DeepSeas and explore a cybersecurity approach tailored to your organization.
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