Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, working within the tools your organization already owns.
Explore cybersecurity services for Chicago organizations seeking stronger detection, faster response, measurable risk reduction, and practical security leadership. DeepSeas brings approximately 30 years of cyber defense experience, supporting enterprise and mid-market teams with managed detection and response, offensive security, governance, compliance, advisory, and continuous monitoring designed for evolving business and regulatory demands.
Integrated cybersecurity capabilities help organizations detect threats, reduce exposure, strengthen programs, and respond with greater confidence.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments, working within the tools your organization already owns.
Ethical hackers use manual testing, adversary emulation, and real attacker tradecraft to identify exploitable weaknesses across networks, cloud environments, applications, APIs, and physical access points.
Continuous attack surface monitoring, vulnerability management, threat intelligence, and dark web monitoring help prioritize the exposures most likely to create business risk.
DeepSeas evaluates security programs, assets, controls, processes, and vulnerabilities to produce prioritized findings and practical treatment plans for leadership, compliance, and insurance needs.
Practitioner-led GRC services support program design, policy development, control mapping, evidence preparation, continuous monitoring, and audit readiness across recognized frameworks.
Experienced advisors and vCISO professionals help leaders set strategy, establish governance, guide investment, prepare for board discussions, and build security programs aligned with business priorities.
DeepSeas combines managed detection and response with offensive security, threat intelligence, exposure management, governance, compliance, incident response, and executive advisory. For Chicago organizations navigating complex vendor ecosystems, regulatory expectations, and distributed environments, this integrated model connects findings to action instead of creating more disconnected alerts. Services can work with your existing SIEM, EDR, and CNAPP tools while supporting measurable, customized cybersecurity outcomes.
DeepSeas supports nearly 1,000 organizations worldwide with practical, measurable cyber defense capabilities.
"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 experienced practitioners, integrated capabilities, and measurable outcomes to complex cybersecurity challenges.
Approximately 30 years of cyber defense experience informs practical guidance for evolving security challenges.
24/7 monitoring, detection, and response helps Chicago organizations maintain continuous security visibility.
One connected program links advisory, testing, intelligence, response, and compliance instead of fragmented point services.
Bring-your-own-stack support helps teams strengthen security without replacing established SIEM, EDR, or CNAPP investments.
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.
DeepSeas provides managed detection and response, penetration testing, security risk assessments, exposure management, vulnerability management, governance and compliance, incident response, strategic security advisory, vCISO support, and related cybersecurity services. Capabilities span endpoint, network, cloud, identity, email, SaaS, operational technology, mobile, and BYOD environments, allowing organizations to combine services around their actual risk profile.
Talk with DeepSeas about your security priorities and current environment.
Held by DeepSeas specialists.
Recognized by Gartner in 2023.
Named a Leader and top-five provider.
Awarded for competitive strategy leadership.
Recognized for strategy in global MDR.
Share your security priorities with DeepSeas and explore a practical path forward.
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