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 wherever practical.
DeepSeas delivers complete cyber defense for Dallas, Texas organizations facing evolving threats, regulatory pressure, and limited security capacity. From 24/7 managed detection and response to penetration testing, exposure management, incident response, advisory, and compliance support, our practitioner-led services help identify risk earlier, strengthen resilience, and produce measurable security outcomes without forcing you to replace the tools you already own.
Integrated cybersecurity services help Dallas organizations prevent, detect, investigate, and respond to evolving cyber risk.
DeepSeas provides 24/7 detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using your existing security tools wherever practical.
Manual penetration testing and adversary simulation identify attack paths across networks, cloud environments, applications, APIs, and other systems before malicious actors exploit them.
Continuously map external assets, monitor dark web exposure, prioritize vulnerabilities by exploitability and business importance, and connect findings to detection and response.
Structured cybersecurity risk assessments examine assets, controls, processes, and people to produce prioritized recommendations that support business, compliance, and insurance decisions.
Experienced responders support scoping, containment, forensics, malware analysis, threat research, recovery, and post-incident improvements when a cyber incident is active.
Strategic advisors and vCISO services provide senior guidance for security programs, executive reporting, governance, acquisitions, compliance, and organizational transformation.
Dallas organizations need security programs that connect daily operations with strategic risk decisions. DeepSeas combines managed detection and response, offensive security, threat intelligence, exposure management, incident response, governance, and advisory through a flexible, practitioner-led model. Coverage can extend across IT, cloud, operational technology, mobile, and BYOD environments while supporting the tools and governance your organization already uses.
DeepSeas helps organizations turn complex cyber risk into prioritized action, operational evidence, and defensible 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 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 broad cybersecurity capabilities with experienced practitioners and measurable operational outcomes.
Nearly 30 years of cyber defense experience supports informed decisions across complex security environments.
24/7 monitoring, detection, and response help Dallas organizations maintain visibility beyond business hours.
Bring-your-own-stack support works with existing SIEM, EDR, and CNAPP tools instead of requiring replacement.
Connected advisory, offensive security, intelligence, MDR, SOC, and GRC capabilities address security as one program.
Experienced cybersecurity leaders support practical, measurable security outcomes.
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, penetration testing, exposure management, vulnerability management, risk assessments, incident response, governance and compliance, security program development, vCISO support, strategic advisory, and tabletop exercises. Services can be combined into a broader cyber defense program or selected to address a specific operational, compliance, or risk requirement.
Speak with DeepSeas about practical cybersecurity options for your organization.
Recognition as a top 40 MDR provider by Gartner.
Recognized as a Leader and top-five provider in 2024.
Award for competitive strategy leadership in MDR.
Recognition for strategy in global MDR best practices.
ISO Lead Auditor certifications held by specialists.
Tell us about your environment, priorities, and current security challenges. DeepSeas will help identify practical next steps.
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