Managed Detection Response
DeepSeas provides continuous detection, investigation, and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments.
DeepSeas helps organizations in Milwaukee strengthen cyber resilience with managed detection and response, offensive security, risk assessments, compliance support, and strategic advisory. Our expert-led approach connects security operations, threat intelligence, governance, and response into measurable protection for growing businesses, regulated organizations, higher education, government agencies, and enterprises operating across complex IT, cloud, and operational technology environments.
Integrated cybersecurity services help organizations identify exposure, strengthen defenses, respond to threats, and mature security programs.
DeepSeas provides continuous detection, investigation, and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments.
Assessments examine your information security program, identify prioritized risks, and create practical treatment plans that support business, regulatory, and compliance decisions.
Ethical hackers use controlled attack simulations across networks, cloud environments, applications, and other approved targets to expose weaknesses before malicious actors exploit them.
Continuous external attack surface monitoring, vulnerability prioritization, and dark web intelligence help identify the exposures most likely to lead to compromise.
DeepSeas designs and operates governance, risk, and compliance programs with control mapping, evidence organization, gap assessments, and audit support.
Experienced advisors help leaders shape security strategy, prepare for board or insurer reviews, prioritize investments, and build sustainable cybersecurity programs.
Milwaukee organizations face changing risks across employees, cloud services, applications, third parties, and operational environments. DeepSeas connects monitoring, offensive testing, threat intelligence, advisory, and compliance support so security decisions reflect your actual exposure rather than isolated alerts. Bring-your-own-stack support helps teams use existing SIEM, EDR, and CNAPP investments while receiving measurable guidance and coordinated action from experienced cybersecurity practitioners.
See how coordinated cybersecurity services can help organizations reduce exposure, improve readiness, and make risk easier to manage.
"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 combines operational security expertise with strategic guidance for organizations seeking practical, measurable outcomes.
Approximately 30 years of cyber defense experience informs practical guidance for complex security environments.
24/7 monitoring, detection, and response support organizations that cannot staff a round-the-clock security operation.
Advisory, offensive security, threat intelligence, MDR, and GRC work together instead of creating disconnected security queues.
Custom combinations of technology, personnel, and services support Milwaukee organizations with different risks, tools, and operating models.
Experienced cybersecurity practitioners guide strategy, operations, governance, and measurable risk reduction.
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 companies may provide managed detection and response, risk assessments, penetration testing, exposure management, incident response, governance and compliance support, security program development, and strategic advisory. DeepSeas brings these capabilities together across endpoint, network, cloud, identity, email, SaaS, mobile, BYOD, and operational technology environments, allowing organizations to address both immediate security needs and broader program maturity.
Talk with DeepSeas about your organization’s risks, priorities, and security objectives.
Certification held by DeepSeas specialists.
Recognition as a top 40 MDR provider by Gartner.
Recognition as a Leader and top-five provider in 2024.
Award for competitive strategy leadership in MDR.
Award recognizing strategy in global MDR best practices.
Share your cybersecurity priorities with DeepSeas and learn which capabilities can address your organization’s most important risks.
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