Most Recommended Network Security Experts

Scott Altiparmak is a Senior Information Security Engineer with 8+ years of experience spanning identity and access management, email security, and cloud security, with a focus on building and automating enterprise security programs end to end. He is the creator of Threat Terminal, a live game-based research platform studying how humans detect phishing in the generative AI era, and maintains open-source tools including Enterprise-Zapp and Threat Intelligence Tarot. He serves as Director of Programming for the South Florida ISSA chapter and speaks regularly at industry and academic events including Tech Hub Pulse 2026, PBSC CyberWeek, and the PBSC Cybersecurity Symposium.

Cybersecurity Expert | Cyberwarfare Strategist | Founder, Centuria Labs Research With over 25 years of specialized experience, Giovanni Battista Caria is a prominent figure in the European cybersecurity landscape. As the head of Centuria Labs Research, he has dedicated his career to advanced research in digital crime prevention and the development of impenetrable defensive architectures. His work bridges the gap between technical innovation and strategic analysis, making him a sought-after speaker at major international forums, including the International Security & Digital Council. Literary Contribution & Strategic Insight Caria’s extensive research has culminated in a series of influential works that address the evolving nature of digital threats from both a technical and legal perspective: The Black Book of Cybersecurity (Il Libro Nero della Cybersecurity): A deep dive into the structural flaws of modern digital infrastructure and the methodologies of high-level cyber attacks. The Invisible Front (Cybersecurity & Cyberwarfare): Co-authored as a comprehensive guide to the convergence of law, technology, and national security, this work serves as a manual for understanding state-sponsored digital conflict. The Architects of Shadow (PsyOps & Information Warfare): An analytical exploration of psychological operations and social engineering, detailing how digital influence can compromise national stability and institutional trust. Innovation in Defensive Systems Throughout his two-decade-long career, Caria has focused on creating innovative defensive frameworks designed to be mathematically and structurally resilient. His approach at Centuria Labs emphasizes proactive threat hunting and the implementation of security layers that go beyond traditional firewalls, focusing instead on system-level integrity and zero-trust principles. Strategic Vision A recognized expert in the legal and technical facets of the GDPR and cyber-law, Caria integrates regulatory compliance with hard-core technical defense. His philosophy is rooted in the belief that true cybersecurity requires a holistic understanding of the "invisible front"—the space where software engineering, international law, and geopolitical interests collide. "Cyber defense is not a static wall, but a dynamic architecture of constant anticipation and research." — Giovanni Battista Caria

Cyber Security Consultant and Tech Enthusiast with 10+ years of experience helping businesses strengthen digital security, optimize technology strategies, and drive innovation across the Cyber Security, Business Consulting, Technology, and SaaS industries. Skilled in identifying security risks, implementing resilient solutions, and advising organizations on secure digital transformation initiatives. Passionate about emerging technologies, PKI, cloud security, SaaS ecosystems, and helping startups and enterprises build scalable, secure, and future-ready systems. Known for combining technical expertise with business insight to deliver practical solutions that enhance operational efficiency, compliance, and cybersecurity resilience.

David Santiago (@DavidSecurity) is a Certified Security Professional with over 15 years of operational experience in security management, risk assessment, and physical protection. A U.S. Marine Corps veteran, David’s background includes securing U.S. embassies abroad and leading campus-wide security operations at a State Department-sponsored international school in Tunis, Tunisia, during the Arab Spring. Today, David works as a security consultant helping physical security integrators, SaaS platforms, and risk management firms improve their content marketing, thought leadership, and client engagement strategies. He specializes in creating industry-specific content—such as case studies, technical guides, and white papers—that informs decision-makers and drives growth. Based in Orlando, Florida, David actively follows the latest trends in physical security. He advises clients, contributes to leading industry publications, and regularly participates in conferences as a writer and subject matter expert.

For over 20 years, I've been on the front lines of cybersecurity, working with global organisations to help them answer critical questions like: "How effective are our security measures against a cyber attack?" My passion is empowering companies to identify and fortify their attack surface. I help leadership teams evaluate their security stack's effectiveness and build actionable roadmaps. Some of the topics I cover are Enterprise cybersecurity and strategy, culture and how it impacts cyber resilience. Emerging attacks and attacker innovation in ransomware and increasingly AI security risks. This passion for sharing actionable knowledge is why I also started writing my blog. It's my way of sharing ideas and providing insights for enterprise security defenders and educate the wider community. In my day-to-day role at Pentera, I lead a team of talented security engineers. We partner with leading organisations who are ready to embrace change. As a speaker and mentor, I enjoy challenging the norms, introducing disruptive technologies, and sharing best practices to raise the bar.

Cybersecurity expert with over a decade and a half of deep-dive experience, I bring an unparalleled level of understanding and expertise in strategic Cybersecurity planning, effective risk control, and pioneering product innovation. My career reflects my role as a reliable authority for organizations of all sizes, as well as an effective liaison with different regulatory bodies.

Co-Founder of SG6, ITRES and DEV6. Cybersecurity consultant with a deep technical background. More than 20 years of experience in the fields of IT Security, Cybersecurity, Security Research and IT Best Practices. Dozens of acredited CVE vulnerabilities since Y2K. I publish practical offensive/defensive research: vulnerability analysis, exploitation notes, reverse engineering, and hardening/detection takeaways.

An experienced security professional helping security folks discover their best with HealthyByte. Previously built and led secure design functions at Insight, secured and protected thousands of websites per day at SiteLock alongside malware research at Sectigo, and currently building and scaling security for millions of rental cars at Turo. I’m curious and a lifetime learner across every field. Areas of Expertise & Interest: ‣ Enterprise/Corporate Security ‣ Infrastructure Security ‣ AWS Cloud Security ‣ Offensive Security (Red Teaming) ‣ Incident Detection and Response

Mark Lynd is the Head of Executive Advisory & Strategy at Netsync, one of the nation's leading value-added resellers, where he works daily with C-Suite executives on AI, cybersecurity strategy, and digital transformation. A 5x CIO/CISO, author, thought leader and keynote speaker with decades of hands-on operational experience, Mark brings a rare combination of boardroom perspective and practitioner depth to every engagement. Ranked as a Top 5 Global Thought Leader in both AI and Cybersecurity by Thinkers360, Mark has facilitated over 150 incident response tabletop exercises across school districts, Fortune 500 enterprises, healthcare systems, government agencies, and mid-market manufacturers. His original research from these exercises represents the most comprehensive tabletop dataset published by a single practitioner. Mark has delivered more than 100 keynotes at marquee events including RSA Conference, Oracle CloudWorld, Cisco Partner Summit, Dell Technologies World, IBM Think, and Gartner Security & Risk Management Summit. His speaking topics span AI generative strategy, AI infrastructure, cybersecurity operations, ransomware preparedness, incident response, and business continuity. He holds a Bachelor of Science degree from the University of Tulsa and attended The Wharton School. Mark served honorably in the United States Army's 3rd Ranger battalion, and 82d Airborne. My Newsletters: - Cybervizer: Weekly strategic briefings for 10k+ professionals. (www.cybervizer.com) - AI Bursts: Cutting through the noise of AI adoption. (www.aibursts.com) My Published Books: Books available on Amazon, Barnes & Noble, Apple Books, and many other outlets: - Cyber War: One Scenario – A guide to infrastructure resilience. - A Leader’s Playbook to Cyber Insurance – Managing the financial ROI of risk. - Cybersecurity Life Skills for Teens – My passion project for digital safety.

📌 Key Areas: Secure Software Engineering | Zero-Trust Security | Cloud & DevOps Security | AI for Cyber Defense | Research & Innovation | Cybersecurity Advocacy I am an award-winning Cybersecurity Professional and Software Engineer with about 10 years of experience building secure, resilient, and scalable systems that safeguard enterprises and critical infrastructures worldwide. At Microsoft, I have spearheaded high-impact security engineering initiatives across Azure, DevOps, and enterprise security driving innovations in zero-trust frameworks, system observability, automation, and AI-integrated security solutions. My contributions have fortified services relied upon by global customers while elevating industry standards in reliability, compliance, and risk management. Beyond corporate impact, I am deeply committed to advancing the cybersecurity community. As an advisor, trainer, and researcher, I actively contribute to academic publications, global workshops, and non-profit initiatives with multiple global organizations like CyberNGO, Mentors Without Borders, TCET, CHARUSAT, PARUL, MSU, Live2Serve and Many More, promoting cybersecurity awareness and training future leaders. Recognized with honors such as the Global Recognition Award 2025 and multiple CISO50 Innovation & Excellence Awards, my mission is to bridge research, engineering, and leadership to shape the future of digital trust and resilience.

Franco Velasquez is the CEO and founder of HostBreach, a cybersecurity advisory firm specializing in external cyber intelligence, attack surface analysis, and intelligence-driven advisory for defense contractors and regulated organizations. His work focuses on understanding how attackers identify, prioritize, and compromise targets using publicly available intelligence, often before traditional security controls detect activity. Franco advises organizations on CMMC readiness, CUI exposure, ransomware risk, and pre-incident threat visibility, helping leaders understand real-world risk beyond checklist compliance. He has experience working with OSINT-based reconnaissance, threat actor behavior analysis, and tabletop attack simulations aligned to observed intrusion patterns. He is frequently consulted on topics including ransomware trends, external exposure management, supply chain risk, and how attackers exploit misconfigurations and unpatched systems. Franco emphasizes practical, intelligence-led decision-making that helps organizations reduce risk before incidents occur.

Dr. Connie McIntosh is a cybersecurity executive, academic, mentor and international speaker. She currently serves as Head of Security at Ericsson. Dr. McIntosh integrates cybersecurity, information security, product security, operational security, and data privacy into business strategy, fostering psychological safety and cultural transformation in traditionally siloed environments. Her background is in National Security and Cyber Defense working in in key Cybersecurity Leadership roles across Defense and Government classified networks, Academia and private enterprise. Her leadership has earned her accolades such as being named among the Top 100 Women in Cybersecurity by US Cyber Defense Magazine and the Black Unicorn Award at Black Hat 2020. In 2025, she was awarded the prestigious Global Recognition Award for Leadership Excellence in cybersecurity underscoring her global recognition and influence along with 2025 Young Leader of the Year - The Fast Mode Awards 2025 recognizing exceptional individuals whose leadership, resilience, and technical depth continue to elevate the global telecom ecosystem. Connie's contributions to cybersecurity have been featured in influential books and magazines, including the groundbreaking Women4Cyber's own "Europe's Top Women in Security, Hacking Gender Barriers", along with "The Rise of Cyber Women Vol 3", "Shining the Spotlight - Stories for Business Success." and others.

Cyber Threat Intelligence Leader | Nation-State Actor Hunter | Strategic Defense Architect With over 20 years at the forefront of cybersecurity—including senior roles in national security and government defense—I specialize in threat hunting, APT campaign attribution, and intelligence-driven defense. My career spans proactive threat detection, incident response, and mentoring high-stakes SOC/CTI teams in classified environments. I’ve led national-level threat hunting operations, correlated complex TTPs using MITRE ATT&CK, and produced actionable intelligence for executive stakeholders. My expertise includes SIEM, SOAR, threat intelligence platforms, and secure infrastructure design, with a deep focus on the MENA region’s cyber threat landscape. As the author of “Inside the Hacker Hunter’s Mind” and “Inside the Hacker Hunter’s Toolkit”, I share real-world insights into state-level threat actors, OSINT, malware analysis, and digital forensics. I’m passionate about mentoring the next generation of cyber defenders and building resilient, intelligence-led security postures. Let’s connect to discuss cybersecurity challenges, threat intelligence, or how I can contribute to your mission. Key Skills: Cyber Threat Intelligence | APT Attribution | Incident Response | Threat Hunting | SIEM/SOAR | MITRE ATT&CK | OSINT | Malware Analysis | Secure Infrastructure | Executive Reporting | Python/C# Automation | MENA Threat Context

Hans Study is an independent network and security expert based in Ontario, Canada. He has spent fifteen years across the public sector, defence, public safety, and critical infrastructure, designing networks and physical security systems for organizations where reliability and operational security are not optional. His work is boutique. Enterprise networks, OT and ICS, controls and security systems, and the infrastructure underneath them. He specializes in hardening and tuning systems where the stakes are high and the margin for error is small. Primary stacks: Microsoft Windows, Cisco, Aruba, and Genetec Security Center, with regular work across most major physical security and network platforms. Hans is the author of The Study Guide series. Two titles are currently available: "The Study Guide to CCTV and Access Control Systems" and "The Study Guide to Network and System Hardening: A Field Guide for Systems and Security Integrators." Additional volumes are in development. The series is written for the people who have to make systems work, not for the people writing executive summaries about them. Hans develops technical courseware and educational content for practitioners and integrators, with post-secondary teaching experience in network security and Cisco CCNA. He hosts the StudyByt3s podcast covering the technical work that sits between IT, physical security, and OT. CISSP credentialed. Available for comment on network architecture, system hardening, physical security systems, Genetec deployments, OT and ICS security, CMMC and CPCSC compliance, security integrator practices, and IT and physical security convergence. Based in Ontario. Works with clients across Canada and the United States in government, public safety, defence, critical infrastructure, and enterprise environments. Sample quote on hardening: "The hardest part of hardening a system isn't the technical work. It's getting the organization to admit which controls have been ignored for the last five years." Sample quote on vendor selection: "The right system depends on the environment, not the rep. If a recommendation changes based on who's selling, that's not a recommendation. That's a sales quota." Media inquiries: media@hans.study. Same-day response.

Paul is a leading Cyber Security Expert and an integral part of the SSLTrust team. He is world-renowned for his knowledge of SSL/TLS Certificates and PKI Solutions, and enterprise companies and small business clients frequently seek his expert opinion on website security.

Roguevault News is an independent and authoritative voice in the cybersecurity world. For over a decade, we’ve built a reputation as a trusted source for balanced, timely, and in‑depth reporting.

Harman Singh, director at respected consultancy Cyphere, is an experienced security professional consulting public and private sector customers across the globe. He brings over a decade of intensive consulting experience, advising both private and public sector organisations on security matters around offensive and defensive security, particularly SOC operations maturity, CREST pen testing, risk and governance. Harman is recognised for his teaching ability; he is not just a consultant, but an educator of other experts: Black Hat Trainer: He has delivered advanced, practical training sessions at the prestigious Black Hat security conferences. Advanced Hacking: His training focuses on sophisticated techniques for attacking and defending complex digital infrastructure, upskilling security teams worldwide. Corporate Consulting: Beyond training, he possesses extensive experience consulting with corporate security teams, helping them manage threats across traditional networks and cloud-based systems. His insights—covering regulatory compliance, comments and best practices—are frequently featured in publications such as Infosecurity Magazine and Fast Company.

Joel Witts is the Content Director and co-founder of Expert Insights, a cybersecurity research and review platform read by thousands of CISOs, IT leaders, and security professionals worldwide. He leads a team of writers and journalists covering hundreds of cybersecurity categories, producing meticulously researched product reviews, buyers' guides, and industry reports. Joel has reviewed hundreds of cybersecurity solutions and interviewed leading experts from across the industry, including leaders from Microsoft, Google Cloud, Zscaler, and SentinelOne. He also hosts the Expert Insights Podcast and co-writes the weekly newsletter, Decrypted. Joel is driven to share his team's expertise with cybersecurity leaders to help them create more secure business foundations.

I’m a security consultant and the founder of North Star Group, where I help individuals, organizations, and communities strengthen their overall safety and preparedness. With over 20 years of experience across military and private-sector security, my work focuses on physical security assessments, threat and vulnerability analysis, CPTED principles, workplace violence prevention, and expert witness consulting. I’ve supported clients across a wide range of sectors—including education, government, business, healthcare, critical infrastructure, and houses of worship—by providing practical, real-world guidance rooted in proactive risk management. Whether it’s improving day-to-day security, planning for emergencies, or helping legal teams understand foreseeability and duty of care, I bring a layered and strategic approach to every situation. If you're looking for expert insight on how to build safer environments and reduce risk, I'm always open to contributing. *If any portion of my response is used, I’d appreciate attribution as follows: Daniel Loo, CPP®, PSS, SRMP — Principal Consultant at North Star Group, a Houston-based security and risk management firm.

I am a cybersecurity and cloud infrastructure expert with a career built across Nokia Siemens Networks, Oracle, PayPal, Microsoft, and Ford Motor Company - five organizations that collectively shape global technology, finance, and industry. Over the past decade, I have designed and secured large-scale cloud systems protecting millions of users, led high-stakes infrastructure programs across enterprise and industrial environments, and invented patented solutions in cybersecurity and cloud architecture. My work spans the full spectrum — from hardening financial platforms against sophisticated threats at PayPal, to driving cloud modernization at Microsoft, to reimagining connected vehicle security at Ford. I hold patents in cybersecurity and cloud systems and have contributed research to recognized professional publications, giving me a grounded perspective that bridges cutting-edge innovation with real-world deployment at scale. Journalists and editors reach out to me for expert commentary on: Cloud security architecture and zero-trust frameworks Enterprise cybersecurity strategy and risk AI and automation in threat detection Digital transformation in automotive and industrial sectors Big Tech infrastructure trends and cloud migration I bring clarity to complex technical topics — translating what happens inside enterprise security and cloud systems into insight that matters to business leaders, policymakers, and the public.