Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using your existing security tools.
DeepSeas delivers managed cybersecurity solutions that connect continuous monitoring, detection and response, offensive testing, advisory, threat intelligence, and compliance support. Built for enterprise and mid-market organizations, the program works with your existing security tools across IT, cloud, identity, email, mobile, BYOD, and operational technology environments to reduce risk and produce measurable security outcomes.
Integrated cybersecurity services combine monitoring, response, testing, advisory, intelligence, and compliance support through one accountable partner.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using your existing security tools.
Endpoint MDR monitors, investigates, and responds across endpoints and servers, helping teams manage alerts, isolate compromised hosts, and act on enriched analyst findings.
Network Detection & Response adds visibility into lateral movement, command and control, data staging, unmanaged devices, and environments where endpoint agents cannot be installed.
Exposure Management maps external attack surfaces, monitors dark web exposure, and prioritizes vulnerabilities by exploitability, asset criticality, and current threat activity.
Security risk assessments identify weaknesses across systems, processes, and controls, then organize findings into prioritized actions that support business and compliance decisions.
DeepSeas develops and operates GRC programs with control mapping, evidence packaging, risk scoring, gap assessments, and ongoing compliance support.
DeepSeas connects managed detection and response with offensive security, exposure management, incident response, threat intelligence, advisory, and GRC. Your team can keep its existing SIEM, EDR, and CNAPP investments while gaining coordinated expertise across IT, cloud, mobile, BYOD, and OT environments. The result is fewer disconnected alerts, clearer priorities, and measurable evidence of cyber risk reduction.
DeepSeas supports nearly 1,000 organizations worldwide with proactive, customized, and measurable cybersecurity outcomes.
"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 is a pleasure to work with. They produce consistent and outstanding results for us and our program, while being thorough, knowledgeable, and easy to work with. We have not had a finding in a certification/re-certification audit in three years across five ISO standards!"
DeepSeas combines experienced practitioners, integrated services, and flexible support around the security environment you already operate.
Approximately 30 years of cyber defense experience support practical security decisions for complex organizations.
One cyber defense program connects advisory, testing, intelligence, MDR, SOC operations, and GRC capabilities.
Bring-your-own-stack support helps teams keep established SIEM, EDR, and CNAPP investments in place.
24/7 monitoring, detection, and response gives organizations continuous operational coverage without building a round-the-clock SOC.
Experienced cybersecurity leaders and practitioners guide complex security programs.
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.
Endpoint security services protect and monitor devices and servers where attackers may gain access. They can include endpoint detection, continuous monitoring, alert investigation, threat hunting, containment, account actions, and response support. DeepSeas Endpoint MDR works within endpoint tooling you already use, helping your team manage alerts and investigate suspicious activity with analyst context rather than simply forwarding notifications.
Talk with DeepSeas about your current risks, tools, and cybersecurity priorities.
Named certification held by DeepSeas specialists.
2023 recognition as a top 40 MDR provider.
2024 Frost Radar Leader and top-five provider recognition.
2024 Frost & Sullivan leadership award for MDR.
2024 Global MDR Best Practices strategy award.
Share your current security priorities and speak with DeepSeas about a practical path forward.
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