Managed Detection Response
DeepSeas MDR provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using your existing security tools.
DeepSeas delivers managed security services for Dallas organizations that need continuous visibility, detection, response, and measurable risk reduction. From MDR and managed SIEM to exposure management, incident readiness, and strategic advisory, our expert-led programs work with your existing tools and support IT, cloud, OT, mobile, and BYOD environments across the United States.
Integrated monitoring, response, assessment, advisory, and risk reduction services for organizations seeking accountable cyber defense.
DeepSeas MDR provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using your existing security tools.
DeepSeas operates detection engineering, tuning, investigation, and response inside your existing SIEM or provides a managed SIEM option with integrated context.
Continuously identify external assets, leaked credentials, vulnerabilities, and attack paths, then prioritize findings by exploitability and business exposure.
DeepSeas examines endpoint, identity, network, cloud, email, and data telemetry for evidence of current or historical intrusion and provides clear remediation guidance.
Controlled penetration tests and attack simulations reveal weaknesses in applications, infrastructure, and processes before malicious actors exploit them.
Senior advisors help leaders set security direction, consolidate tools, prepare for board or insurer reviews, and build practical cyber risk programs.
DeepSeas combines managed detection and response with offensive testing, exposure management, incident response, threat intelligence, compliance support, and strategic advisory. Programs work inside the tools you already own, helping Dallas organizations address distributed environments, growing attack surfaces, and limited security staffing without forcing a rip-and-replace approach. Outcomes are documented so leadership can evaluate risk reduction with evidence.
DeepSeas supports nearly 1,000 organizations worldwide with proactive, customized, and measurable cybersecurity outcomes.
"DeepSeas allows my team to deliver the compliance needed to stay up-to-date with all of our governing bodies. Furthermore, we are more confident that our staff, faculty, and students are better protected with DeepSeas as a cybersecurity partner. Without a doubt, DeepSeas is worth every dollar spent. This is our..."
"DeepSeas data security experts are top notch. They have helped us to improve our cybersecurity posture through risk assessments, penetration testing, and the development of a Data Governance Strategy. They are an invaluable partner."
DeepSeas brings expert-led operations, broad coverage, and measurable accountability to managed security.
24/7 monitoring, detection, and response support organizations operating across Dallas and the wider United States.
Bring-your-own-stack support helps Dallas security teams use existing SIEM, EDR, and CNAPP investments without unnecessary replacement.
Coverage spans IT, cloud, operational technology, mobile, and BYOD environments with connected security capabilities.
Approximately 30 years of cyber defense experience and service to nearly 1,000 organizations worldwide.
Experienced cybersecurity practitioners guide strategy, operations, risk, and compliance.
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.
Managed security services provide outsourced or co-managed cybersecurity capabilities such as continuous monitoring, threat detection, investigation, response, vulnerability management, and advisory. DeepSeas combines these capabilities into programs tailored to an organization’s environment and risk. Services can operate within existing security tools and cover endpoint, network, cloud, identity, email, SaaS, operational technology, mobile, and BYOD environments.
Speak with DeepSeas about your monitoring, response, and cyber risk priorities.
Certification held by DeepSeas specialists.
Recognized as a top 40 MDR provider by Gartner.
Recognized as a Leader and top-five provider.
Award for MDR competitive strategy leadership.
Recognition for global MDR strategy.
Tell DeepSeas about your environment, current tools, and security priorities to discuss a practical managed services approach.
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