Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using the security tools you already own.
DeepSeas delivers complete cybersecurity for organizations in Fort Worth, combining managed detection and response, offensive testing, risk assessment, compliance support, and strategic advisory. With approximately 30 years of cyber defense experience and coverage across the United States, our expert-led programs help security teams identify meaningful exposure, respond to threats, and build measurable resilience without replacing the tools they already use.

Integrated cybersecurity services help Fort Worth organizations detect threats, reduce exposure, test defenses, and strengthen security programs.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using the security tools you already own.
Ethical hackers use manual testing and adversary tradecraft to identify exploitable weaknesses across networks, cloud environments, applications, APIs, wireless systems, and physical access points.
A structured assessment identifies strengths, weaknesses, prioritized risks, and treatment options through stakeholder interviews, asset inventory, risk workshops, and formal reporting.
Continuous external attack surface monitoring, dark web intelligence, and vulnerability prioritization help security teams focus on the exposures most likely to lead to compromise.
DeepSeas develops practical governance, risk, and compliance programs with control mapping, evidence organization, policy support, and continuous monitoring for audit readiness.
Experienced responders help organizations scope, contain, investigate, and recover from cyber incidents while supporting threat research, malware analysis, and process improvement.
Fort Worth organizations face complex cyber risk across users, cloud environments, applications, networks, and operational systems. DeepSeas connects strategic advisory, offensive security, threat intelligence, managed detection and response, and governance into a coordinated program. Our team can work within your existing stack, helping reduce fragmented operations, clarify priorities, and produce evidence of progress for leadership, auditors, insurers, and customers.

DeepSeas helps organizations turn cybersecurity priorities into documented, actionable, and measurable outcomes.
DeepSeas combines experienced practitioners, integrated services, and flexible support for organizations seeking practical cyber defense.
Approximately 30 years of cyber defense experience supports informed decisions for complex security environments.
24/7 monitoring, detection, and response helps Fort Worth organizations maintain visibility beyond normal working hours.
Bring-your-own-stack support helps teams use existing SIEM, EDR, and CNAPP investments without unnecessary replacement.
Advisory, testing, intelligence, response, and compliance capabilities connect into one coordinated cybersecurity program.
Experienced cybersecurity practitioners guide strategy, operations, response, 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.
DeepSeas provides managed detection and response, endpoint and network monitoring, penetration testing, cybersecurity risk assessments, exposure management, vulnerability management, incident response, governance and compliance support, strategic security advisory, vCISO services, and security program development. Services can be combined into a customized cyber defense program based on your organization’s risks, existing tools, operating model, and security priorities.
Talk with DeepSeas about your organization’s security priorities.
Recognition as a top 40 MDR provider by Gartner.
Recognized as a Leader and top-five provider in the 2024 Frost Radar market.
Award for Competitive Strategy Leadership in Managed Detection and Response.
Recognition for strategy in the 2024 Global MDR Best Practices Award.
ISO Lead Auditor certifications held by DeepSeas specialists.
Share your priorities with DeepSeas and explore a practical path toward stronger, measurable cyber defense.
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