Top Cybersecurity Experts 2025

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.

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.

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.

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.

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.

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

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.

Customer service focused IT and Project Manager with an impressive track record for customer satisfaction and proven results. Fifteen years of professional IT experience, including managing an internal IT department and four years of managing client relationships and client facing projects. Specialties: o Three years managing IT department of five staff including network administrator, support staff and data analysts o Ten years project management, PMP certified o Client relationship management o Budget, vendor, license management o IT infrastructure management o Customer facing IT consulting o Requirements gathering o Technical writing o Data analysis and manipulation o SQL, MS technologies, SalesForce, Document & Practice Management software o Cloud technologies o ITIL o SDLC

I am an Information Security Professional with years of experience in Application Security, Penetration Testing & Information Risk Management. I have rich experience with working on complex security engagements, from designing and executing of Application Security Strategy, Supply Chain Security to Compliance Consulting. Some of the topics that is fascinating to me is DevSecOps, Advancement and usage of AI in Application Security, Security Awareness and Vulnerability Management. My mission is to use my existing knowledge and expertise to assist organizations in making their applications more resilient. Always enthusiastic about sharing my insights and best practices with other security professionals and enthusiasts via talks and coffee chats.

A pragmatic leader with experience guiding, building, and scaling cybersecurity and privacy programs across sectors. I formerly led the Information Security program for Udemy an EdTech firm. Implemented company-wide cybersecurity and data privacy governance programs for payment organizations, Led service delivery strategy, audits and penetration testing engagements for Consulting organizations and help company stakeholders understand likely business threats and practical methods to minimize risk.

As the Director of Cybersecurity at Fortra, I lead a distinguished team of cybersecurity experts in delivering Managed Security Programs to global clients. With over a decade of experience in the field, I bring a wealth of expertise in data protection, threat hunting, incident response, cybersecurity policy, IT solutions, and security systems.My mission is to empower organizations to safeguard their most sensitive data and assets against cyber threats while aligning with business objectives and regulatory standards. I thrive on sharing insights and knowledge through publications on diverse cybersecurity topics, ranging from the role of cyber executives to best practices in data security. As a strong advocate for AI and ML technology, I believe in the imperative need for organizations to mature and embrace these innovations. I actively collaborate with professionals and stakeholders to drive innovation and enhance industry standards.

Seasoned content writer with more than a decade of experience.Wrote hundreds of blogs, ebooks, newsletters, social media content, news articles.Worked with numerous tech start-ups, digital marketing agencies, and media publications.Focused mostly on B2B tech, cybersecurity, blockchain, and AI. Capable of covering virtually any topic.Experienced in journalistic writing.

I am a cybersecurity leader and consultant with experience building and improving enterprise security programs. My work focuses on helping organizations translate complex cyber risks into practical business decisions, measurable improvements, and resilient security strategies. I specialize in cybersecurity leadership, cloud and application security, vulnerability and exposure management, secure software development, security automation, and risk-based program design. I have led major security initiatives, introduced technologies and processes that improved visibility and reduced organizational risk, and helped teams strengthen security without unnecessarily slowing innovation. I have also held an ethical hacker where I was tasked with attacking our company's systems for testing purposes. My professional credentials include CSSIP, and my notable accomplishments include cybersecurity transformations, algorithmic process optimization, data-driven architectural re-engineering, quantitative process and systems optimization. I can provide clear, practical commentary on cyber threats, security leadership, cloud risk, artificial intelligence in cybersecurity, vulnerability management, and the challenges organizations face when balancing security, cost, and speed.

Michel Fotsing is a CISSP-certified cybersecurity architect specializing in AI governance for organizations navigating emerging regulations (EU AI Act, NIS2, Quebec Law 25, GDPR). He consults for Quebec's government through Levio and serves on the ISC2 Exam Review Commission, contributing to international cybersecurity certification standards. Author of "L'Architecte Numérique: Orchestrer les intelligences à l'ère de l'IA" (2026, distributed by Hachette), he developed the Three Zones Framework for classifying AI-augmented security decisions. He also created StructureClerk.ca, a free compliance tool covering 169 jurisdictions. Michel can speak to: AI governance and shadow AI risks for businesses, cybersecurity strategy for SMEs, the human-AI decision boundary in critical systems, and data privacy compliance across international frameworks.

Nikolas Lamprou is a Principal Consultant in Vulnerability Management with 15 years of hands-on experience in IT, spanning web development and e-commerce before specialising in cybersecurity. He holds an MSc and industry certifications including GCFR, SC-200, Security+, PNPT, eJPT, and BTL1, and works daily at the intersection of vulnerability management, penetration testing, and practical security defence. He is also the founder of Solve Tech Today, where he writes clear, no-nonsense guidance on security, Windows, and everyday tech problems.

Luke Irwin is a cybersecurity strategist, speaker, and Founder of Aegis Cybersecurity, an Australian consultancy focused on cybersecurity governance, risk, compliance, and strategic advisory. He works with organisations to strengthen cyber resilience through clearer leadership, stronger governance, and practical security programs aligned to business priorities. He is known for helping boards, executives, and business leaders understand cybersecurity as a whole-of-business risk rather than a purely technical issue. His work centres on translating complex security and compliance requirements into commercially grounded decisions that support resilience, accountability, trust, and long-term performance. Luke advises across frameworks and standards including ISO 27001, SOC 2, Essential Eight, NIST, and SMB1001. His experience spans cybersecurity strategy, security maturity uplift, policy and control development, third-party risk, governance improvement, and fractional CISO support, particularly for small to mid-market and regulated organisations. Alongside his advisory work, Luke is a regular speaker and industry commentator on cyber risk, governance, vendor risk, and modern security leadership. He is recognised for his direct, practical perspective and his ability to bridge the gap between technical security expectations and executive decision-making.

Pranav Saji is an AI Security and Generative AI expert based in the San Francisco Bay Area, currently Head of AI Security at Symosis Security and a Machine Learning Consultant at LinkedIn. He has delivered over $50M in business impact across Fortune 100 enterprises and startups, founded or led AI at 5+ companies, and built production AI systems spanning security analytics, agentic workflows, and large language model applications. A recognized voice on AI agent and MCP security, he publishes thought leadership in outlets such as HackerNoon and advises enterprises on securing generative AI and agentic systems. He is an accepted trainer at OWASP Global AppSec USA 2026 and a Core Judge for the USAII Global AI Hackathon. He holds a Master's in Computer Science (AI specialization) and CompTIA Security+ and Azure AI Engineer certifications.

Alexia P. Idoura is a cybersecurity expert and founder of Security Done Easy, where she helps primarily women-led and lgbtq-led small businesses protect their companies without needing to be technical. She specializes in practical risk prioritization, cyber insurance readiness, phishing and fraud prevention, AI-related security risks, and translating complex cybersecurity concepts into plain English. Alexia is a Stevie Award–winning business blogger, a frequent speaker and educator, and the creator of tools and programs that help founders make confident, informed security decisions.