Red Team Exercises
DeepSeas emulates realistic attacker tradecraft against defined objectives to evaluate whether security operations can detect, investigate, and interrupt a capable adversary across your environment.
Adversary Simulation Services and Exercises help organizations test whether their people, processes, and security controls can detect and stop realistic attacks. DeepSeas combines red teaming, purple teaming, penetration testing, and tabletop exercises to expose meaningful attack paths, validate response capabilities, and create practical improvements. Designed for organizations across the US, engagements deliver evidence-based insight rather than checkbox assurance.
Controlled security exercises reveal how effectively your organization detects, responds to, and stops realistic attacks.
DeepSeas emulates realistic attacker tradecraft against defined objectives to evaluate whether security operations can detect, investigate, and interrupt a capable adversary across your environment.
Human-led simulations mirror techniques used by criminal and nation-state groups, uncovering stealthy attack paths and weaknesses that automated testing may miss.
DeepSeas works alongside your defenders to connect offensive activity with detection and response improvements, trading some realism for faster collaboration and measurable learning.
Manual penetration testing validates weaknesses across networks, cloud environments, applications, physical access points, and other approved attack surfaces.
Phishing, vishing, smishing, and physical assessments test how people, processes, and technical controls respond when an attacker uses credible deception.
Mock cyber incidents bring security, IT, legal, communications, and executive stakeholders together to validate readiness, decision rights, escalation, and response coordination.
Adversary simulation turns assumptions about security readiness into observable evidence. DeepSeas uses controlled attack simulations and human-led testing to examine whether your controls detect and stop realistic intrusion paths, from initial access through defined objectives. Findings show what was detected, what was missed, and which response improvements matter most, helping organizations reduce cyber risk with focused, actionable remediation rather than another generic findings list.
See how realistic testing can strengthen controls, response operations, and organizational confidence.
"In cybersecurity we were not looking for a vendor, we were looking for a trusted partner that could push us, challenge us, and ensure we got better at protecting our systems every day. We found that partner with DeepSeas, and they have helped us be far smarter and better than..."
DeepSeas combines offensive expertise with operational security experience to make simulations useful beyond the final report.
Human-led testing uses attacker techniques and defined objectives instead of relying only on automated scans.
Offensive security findings connect with detection, response, advisory, and governance capabilities across DeepSeas.
Evidence and proven recommendations help your team prioritize remediation and improve measurable cyber defense outcomes.
Nearly 30 years of cyber defense experience support engagements for enterprise, mid-market, government, and education organizations.
Experienced practitioners connect offensive testing with practical security outcomes.
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.
Adversary simulation services use controlled attack activity to test how effectively an organization’s people, processes, and security technologies detect and respond to realistic threats. Depending on the objective, an engagement may include red teaming, adversary emulation, penetration testing, purple teaming, social engineering, or tabletop exercises. The result is evidence about actual defensive performance and practical recommendations for improvement.
Talk with DeepSeas about a simulation aligned with your risks and objectives.
Held by DeepSeas specialists.
2023 recognition as a top 40 MDR provider.
2024 Frost Radar Leader and top-five provider recognition.
2024 competitive strategy leadership award recognition.
2024 Global MDR strategy award recognition.
Share your security objectives and discuss an adversary simulation designed around your environment and risk priorities.
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