Managed Detection Response
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using existing security tools.
Explore how DeepSeas helps organizations strengthen cyber resilience with managed detection and response, offensive security, risk assessments, compliance support, and strategic advisory. With nearly 30 years of experience and services designed for complex environments, DeepSeas provides measurable, expert-led protection for organizations evaluating cybersecurity partners in Melbourne and beyond.

Integrated cybersecurity services help organizations detect threats, reduce exposure, test defenses, and build stronger security programs.
DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using existing security tools.
Ethical hackers use manual testing and adversary techniques to expose weaknesses across networks, applications, cloud environments, and security controls before attackers exploit them.
External attack surface monitoring, vulnerability management, and dark web intelligence help identify the exposures most likely to lead to compromise and prioritize practical remediation.
Structured assessments examine assets, controls, processes, and potential impacts to produce prioritized risk treatment plans that support business, regulatory, and contractual decisions.
DeepSeas develops and operates compliance programs with control mapping, evidence organization, risk governance, and ongoing monitoring for frameworks and customer requirements.
Experienced advisors support security strategy, board communication, program development, executive decisions, and vCISO needs with practical guidance connected to operations.
DeepSeas combines managed detection and response, offensive security, threat intelligence, advisory, and governance into a coordinated cyber defense program. Organizations evaluating cybersecurity companies in Melbourne can access a partner focused on measurable outcomes rather than disconnected tools. Bring-your-own-stack support, coverage across IT and cloud environments, and practitioner-led guidance help security teams improve visibility, reduce exposure, and make stronger decisions.

DeepSeas helps organizations turn complex cyber risk into measurable, actionable security outcomes.
DeepSeas combines long-standing expertise with integrated services designed around each organization’s actual risk.
Nearly 30 years of cyber defense experience supports practical guidance for complex security challenges.
Continuous monitoring, detection, and response help security teams address threats without building every capability internally.
Advisory, testing, intelligence, response, and compliance work together instead of creating disconnected security queues.
Documented findings, remediation guidance, and operational evidence help leaders track meaningful cyber risk reduction.
Experienced cybersecurity practitioners support strategy, operations, risk, and resilience.

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, endpoint and network monitoring, penetration testing, exposure management, compromise assessments, vulnerability management, incident response, governance and compliance, security risk assessments, vCISO support, strategic advisory, and security program development. Services can be combined into an integrated cyber defense program or selected individually according to an organization’s priorities, existing tools, operating model, and risk environment.
Speak with DeepSeas about your security priorities and operating environment.
ISO Lead Auditor certifications held by DeepSeas specialists.
Recognition as a top 40 Managed Detection and Response provider by Gartner.
2024 Leader and top-five provider recognition in the Frost Radar Global MDR Market.
2024 Best Practices Competitive Strategy Leadership Award for MDR.
2024 Global MDR Best Practices Award for Strategy recognition.
Share your security goals, current environment, and priorities with the DeepSeas team to explore a practical path forward.
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