Top Cybersecurity Companies in Melbourne

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.

Cybersecurity analysts monitoring threat activity in a modern security operations centre

Our Cybersecurity Services

Integrated cybersecurity services help organizations detect threats, reduce exposure, test defenses, and build stronger security programs.

Managed Detection Response

DeepSeas provides continuous detection and response across endpoint, network, cloud, identity, email, SaaS, and operational technology environments using existing security tools.

Penetration Testing

Ethical hackers use manual testing and adversary techniques to expose weaknesses across networks, applications, cloud environments, and security controls before attackers exploit them.

Exposure Management

External attack surface monitoring, vulnerability management, and dark web intelligence help identify the exposures most likely to lead to compromise and prioritize practical remediation.

Security Risk Assessments

Structured assessments examine assets, controls, processes, and potential impacts to produce prioritized risk treatment plans that support business, regulatory, and contractual decisions.

Governance Risk Compliance

DeepSeas develops and operates compliance programs with control mapping, evidence organization, risk governance, and ongoing monitoring for frameworks and customer requirements.

Strategic Security Advisory

Experienced advisors support security strategy, board communication, program development, executive decisions, and vCISO needs with practical guidance connected to operations.

Expert-Led Cyber Defense

Build A More Defensible Security Program

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.

Cybersecurity consultant reviewing a risk assessment with an executive team
Trusted By Organizations

Security Outcomes

DeepSeas helps organizations turn complex cyber risk into measurable, actionable security outcomes.

"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..."

JIM IBISTER
JIM IBISTER

"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..."

Jim Goulding
Jim Goulding
The DeepSeas Difference

Why Choose DeepSeas?

DeepSeas combines long-standing expertise with integrated services designed around each organization’s actual risk.

Deep Experience

Nearly 30 years of cyber defense experience supports practical guidance for complex security challenges.

Always-On Coverage

Continuous monitoring, detection, and response help security teams address threats without building every capability internally.

Integrated Services

Advisory, testing, intelligence, response, and compliance work together instead of creating disconnected security queues.

Measurable Outcomes

Documented findings, remediation guidance, and operational evidence help leaders track meaningful cyber risk reduction.

Meet The DeepSeas Team

Experienced cybersecurity practitioners support strategy, operations, risk, and resilience.

Portrait of Lewie Dunsworth, Chief Executive Officer at DeepSeas

Lewie Dunsworth

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.

Portrait of Keith Robertson, Risk Management and Compliance Executive at DeepSeas

Keith Robertson

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.

Portrait of Sean Duffy, Cybersecurity and Legal Advisor at DeepSeas

Sean Duffy

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.

Portrait of Matt Lammers, CISO and IT Risk Executive at DeepSeas

Matt Lammers

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.

Frequently Asked Questions

What cybersecurity services does DeepSeas provide?

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.

How does managed detection and response work?

Does DeepSeas replace our existing security tools?

What does a penetration test identify?

When should an organization conduct a cybersecurity risk assessment?

Can DeepSeas help with compliance and audit preparation?

What is a vCISO and when is it useful?

How can an organization compare cybersecurity companies in Melbourne?

Still Have Cybersecurity Questions?

Speak with DeepSeas about your security priorities and operating environment.

Recognized & Credentialed

Awards and Recognition

ISO Lead Auditor certification recognition for DeepSeas specialists

ISO Lead Auditor certifications

ISO Lead Auditor certifications held by DeepSeas specialists.

Gartner top 40 Managed Detection and Response provider recognition

Gartner top 40 MDR provider

Recognition as a top 40 Managed Detection and Response provider by Gartner.

Frost Radar Global Managed Detection and Response recognition

Frost Radar MDR Leader

2024 Leader and top-five provider recognition in the Frost Radar Global MDR Market.

Frost and Sullivan Competitive Strategy Leadership Award recognition

Frost & Sullivan award

2024 Best Practices Competitive Strategy Leadership Award for MDR.

2024 Global MDR Best Practices Award for Strategy recognition

Global MDR Best Practices Award

2024 Global MDR Best Practices Award for Strategy recognition.

Discuss Your Cybersecurity Priorities

Share your security goals, current environment, and priorities with the DeepSeas team to explore a practical path forward.

Contact Us Today

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