Managed Detection Response
DeepSeas provides 24/7 detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, using your existing security tools where practical.
DeepSeas delivers proactive cybersecurity services in Atlanta for organizations seeking stronger visibility, faster response, and measurable risk reduction. From 24/7 managed detection and response to penetration testing, exposure management, compliance support, and strategic advisory, our expert-led approach helps security teams protect cloud, endpoint, network, identity, email, and operational technology environments without forcing unnecessary technology replacement.

Integrated cybersecurity capabilities help Atlanta organizations detect threats, reduce exposure, prepare for incidents, and strengthen long-term resilience.
DeepSeas provides 24/7 detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, using your existing security tools where practical.
Structured assessments identify security strengths, weaknesses, and prioritized risks through stakeholder interviews, asset review, risk workshops, and documented treatment planning.
Ethical hackers conduct controlled attack simulations across networks, cloud environments, applications, APIs, and other systems to expose weaknesses before malicious actors exploit them.
Continuous external attack surface monitoring, vulnerability prioritization, and dark web intelligence help organizations focus remediation on the exposures most likely to create business risk.
DeepSeas designs and operates compliance programs with control development, evidence organization, gap assessments, and continuous monitoring for regulatory, customer, and insurance requirements.
Experienced advisors support board reporting, security strategy, program development, vCISO needs, acquisitions, insurance reviews, and decisions about internal versus managed capabilities.
Atlanta organizations face changing exposure across cloud, endpoints, identity, applications, and connected environments. DeepSeas brings these concerns into one coordinated cybersecurity program, combining 24/7 monitoring, offensive testing, threat intelligence, incident readiness, advisory, and governance support. The approach is designed around your existing tools, operating realities, and business priorities, helping your team move from disconnected alerts and compliance pressure toward clearer decisions and measurable risk reduction.

DeepSeas supports nearly 1,000 organizations worldwide with integrated cybersecurity expertise and measurable outcomes.
DeepSeas combines long-standing cyber defense experience with practical, connected services for complex security programs.
Continuous monitoring, detection, and response help Atlanta organizations address threats beyond normal business hours.
Advisory, offensive security, threat intelligence, MDR, and GRC work together instead of creating disconnected security queues.
Bring-your-own-stack support helps teams use existing SIEM, EDR, and CNAPP investments without unnecessary replacement.
Documented findings, actions, and risk reduction provide clearer evidence for leadership, auditors, insurers, and customers.
Experienced cybersecurity practitioners bring technical, executive, and compliance expertise.

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.
Cybersecurity service costs vary based on the capabilities required, the size and complexity of your environment, existing security tools, coverage expectations, and whether you need a focused assessment or an ongoing program. DeepSeas offers services ranging from risk assessments and penetration testing to managed detection and response, advisory, and GRC. A practical starting point is an outside-in diagnostic that helps prioritize the work your organization needs most.
Talk with DeepSeas about your risks, priorities, and available security options.
Held by DeepSeas specialists supporting governance and compliance engagements.
Recognized as a top 40 Managed Detection and Response provider.
Named a Leader and top-five provider in the 2024 global MDR market.
Received the 2024 Best Practices Competitive Strategy Leadership Award.
Received the 2024 Global MDR Best Practices Award for Strategy.
Share your priorities with DeepSeas and explore a practical path toward stronger detection, response, compliance, and risk reduction.
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