Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using existing security tools where appropriate.
DeepSeas delivers managed security services for organizations seeking continuous detection, response, and measurable cyber risk reduction. Our expert-led MSSP model brings together managed detection and response, threat intelligence, exposure management, advisory, compliance support, and incident readiness. For Israeli organizations operating in a complex threat landscape, DeepSeas helps turn fragmented security operations into a coordinated, accountable defense program.

Integrated managed security services combining continuous monitoring, response, risk reduction, advisory, and compliance support.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and OT environments, using existing security tools where appropriate.
DeepSeas operates detection, tuning, investigation, and response inside your existing SIEM or provides SIEM capabilities with integrated ingestion, context, and ongoing analyst support.
Continuously map external attack surfaces, identify unknown assets and exposed credentials, and prioritize remediation according to exploitability, asset criticality, and threat activity.
Senior advisors help leaders make defensible decisions about security strategy, governance, technology, acquisitions, insurance reviews, and executive or board expectations.
Develop and operate governance, risk, and compliance programs with control mapping, evidence organization, gap assessment, and ongoing audit readiness.
Prepare teams through incident response reviews, tabletop exercises, playbooks, escalation planning, and realistic scenarios that expose coordination and process gaps.
DeepSeas brings monitoring, investigation, response, offensive security, exposure management, threat intelligence, advisory, and compliance support into one coordinated program. Instead of forwarding disconnected alerts, the team works toward finished outcomes, with response authority defined around your organization’s needs. This approach helps Israeli organizations address evolving cyber risk with clearer ownership, broader visibility, and security operations that connect technology, people, and business priorities.

DeepSeas helps organizations worldwide strengthen security operations, reduce exposure, and prepare for scrutiny from leadership, auditors, insurers, and customers.
DeepSeas combines long-standing cyber defense experience with an integrated, practitioner-led managed security model.
Nearly 30 years of cyber defense experience supports informed decisions across complex security environments.
Continuous monitoring, detection, and response help organizations address threats beyond the limits of internal staffing.
Bring-your-own-stack support helps Israeli organizations extend current SIEM, EDR, and CNAPP investments without forced replacement.
Specialists connect operations, offensive security, advisory, threat intelligence, and compliance into one accountable program.
Experienced cybersecurity practitioners support strategy, operations, risk, and response.

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.
An MSSP provider manages selected or comprehensive cybersecurity operations on behalf of an organization. Services can include continuous monitoring, alert investigation, threat hunting, incident response, SIEM management, exposure management, compliance support, and security advisory. The exact scope depends on the provider and engagement model. DeepSeas combines managed detection and response with broader cyber defense capabilities so security findings can connect to remediation, strategy, and governance.
Speak with DeepSeas about building a managed security program for your organization.
Recognition as a top 40 Managed Detection and Response provider.
Recognition as a Leader and top-five provider in the 2024 Frost Radar market.
Award for Competitive Strategy Leadership in Managed Detection and Response.
Recognition through the 2024 Global MDR Best Practices Award for Strategy.
Tell us about your security environment, priorities, and MSSP requirements so DeepSeas can discuss a practical path forward.
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