Top Cybersecurity Consulting 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.

Kerem Ozturk is the founder of New Paradigm Security, an Amsterdam-based cybersecurity consultancy focused on helping European organizations protect themselves against cyber risks and achieve regulatory compliance(e.g. NIS2 and DORA). His 20+ year career spans enterprise security roles at major international companies including financial institutions and global technology consultancies like Renault, Coca-Cola, ING, DXC Technology and Cognizant where he led Cybersecurity departments, Security Operation Centers and technical projects like SIEM deployments, vulnerability management programs, and cloud security implementations. He specializes in translating complex EU cybersecurity regulations into practical governance frameworks, with particular expertise in Microsoft Security services, Virtual CISO services, and board-level risk communication.

I am a cybersecurity professional with over 18 years of experience in offensive security, penetration testing, and cyber defense. I focus on deeply understanding complex security challenges and developing practical, real-world solutions that strengthen organizations against evolving threats. I enjoy working across various security domains and approaching problems with a hands-on, analytical mindset. My colleagues and clients describe me as a hardworking, disciplined professional who remains calm and solution-oriented when handling high-risk incidents and challenging environments. My areas of expertise include vulnerability assessment, exploit development, incident response, network security architecture, and enterprise systems administration. I hold industry-recognized certifications such as OSCP, OSCE, GWAPT, GCIH, CCNA, and RHCE, which demonstrate my commitment to continuous learning and technical excellence.

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.

Seasoned Cybersecurity Professional with over 15 years of experience specializing in Identity and Access Management (IAM), application security, and cryptography (PKI). Demonstrated expertise in designing and implementing robust security architectures and solutions across complex, multi-cloud environments. Known for a strategic approach to security architecture and a deep understanding of key protocols (OIDC, OAuth 2.0, SAML, MFA) and compliance standards, with a focus on enabling secure, scalable user access. With over 8 years of hands-on experience in cloud security and application security design, I have successfully led projects for global enterprises to strengthen their security posture, enhance user authentication, and protect sensitive data. Skilled in collaborating with cross-functional teams to drive security initiatives that align with business objectives and regulatory requirements. Proficient in Java, .NET, and Node.js, with an in-depth technical understanding of security tools such as OKTA CIC, SAP Gigya, PingFederate, and Microsoft Azure AD.

CEO of TrustNet, a leading provider of cybersecurity and assurance services serving some…

CISO and advisor helping FinTechs turn DORA/NIS2/PSD2, PCI DSS, ISO 27001, and GDPR into practical resilience and business value. 20+ years across architecture, incident response, and program build-out. I prioritise KPIs, clear board communication, and continuous improvement, not checkbox compliance. Highlights: led DORA/NIS2 readiness for cross-border teams (faster audits; 30%+ lower regulatory risk), stood up vCISO/vDPO programs with cloud-native controls, vendor risk, and privacy automation. Community: OWASP Riga and Cloud Security Alliance Chapter Lead. Need to get regulator-ready? Let’s connect.

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

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.

Don Warden is a seasoned cybersecurity executive and author with over 30 years of experience securing complex environments across diverse industries. His expertise spans digital forensics, cyber threat intelligence, and incident response, where he has led high-stakes investigations into ransomware attacks, insider threats, and cyber extortion. As a trusted advisor, Don has guided organizations and high-profile individuals through threat mitigation, resilience planning, and post-incident recovery. Holding advanced certifications, including Certified Ethical Hacker (CEH) and Certified Cyber Security Analyst (CCSA), along with a Master’s in Cybersecurity and Information Assurance, Don combines technical depth with strategic vision. His passion for ethical hacking and proactive defense drives his approach to strengthening security postures in an evolving digital landscape. Beyond cybersecurity, Don enjoys traveling with his family to remote destinations and is deeply committed to philanthropic efforts that make a meaningful impact on people’s lives.

As the Founder of Sekurno, a cybersecurity company focused on protecting fast-growing startups in tech-driven industries, I'm passionate about making technology accessible and worry-free. My personal motivation stems from a belief that technology can change society for the better, but only with the trust that comes from integrating security. At Sekurno, we help businesses build trust with their customers by securing their operations and making technology worry-free. With years of experience in the cybersecurity industry, I'm committed to staying up-to-date on the latest threats and innovations, ensuring that our clients are always protected. Let's connect and see how we can work together to build a more secure digital future.At Sekurno we provide the following services: * Penetration Testing * Data Protection (GDPR, CPPA) * Security Compliance (ISO/27001, SOC2) * SSDLC/DevSecOps * Security Training

Charles Edda & Charles Bouley, Inc. (CECB) is a Texas-based cybersecurity company founded in 1999. The company specializes in managed security risk assessments, including vulnerability scanning, penetration testing, and security awareness training. Its primary clients include small businesses, medical practices, and law firms. The company is currently owned and operated by Dr. Rachel Levitch, who has expanded its services to provide advanced cybersecurity solutions that integrate financial risk management and regulatory compliance. CECB's services follow industry-recognized cybersecurity frameworks such as the National Institute of Standards and Technology (NIST), ISO 27001, and CIS Controls to help organizations establish robust cybersecurity practices and culture.

Shyam Gajula is a Cybersecurity Professional specializing in Endpoint Security, Identity & Access Management (IAM), Zero Trust Architecture, and Cloud Security with 9+ years of experience securing enterprise and hybrid environments. He helps organizations strengthen security posture by implementing identity-centric architectures, continuous risk reduction frameworks, and compliance-focused controls across AWS, VDI, and distributed infrastructures. Shyam holds the AWS Certified Solutions Architect credential and has hands-on expertise in cloud security design, endpoint hardening, authentication frameworks (including SAML 2.0 / SSO), access governance, EDR/agent policy optimization, and secure cloud operations. His research and practical work focus on real-world defenses against modern threats, endpoint risk scoring, and identity-driven security automation. He is a published cybersecurity researcher, an international keynote speaker, and serves as a judge and evaluator for global cybersecurity awards and innovation competitions. Shyam frequently contributes to peer review panels and provides expert insights on best practices for Zero Trust adoption, cloud risk mitigation, and securing modern digital workplaces. Orcid Research Profile: https://orcid.org/0009-0001-4279-9629

I've worked in the cybersecurity industry for the last 20 years consulting for the top financial and legal services firms in the country. I have demonstrated history in design, implementation, and management of security programs to address risks across the cyber kill chain. Skilled in Security Strategy, Awareness, Emerging Security Technologies, Risk Assessments, Red Team Exercises, Governance, and Education. Primary focused on the law and finance sectors but have applicable knowledge to all industries.

As a Cybersecurity Auditor operating at the intersection of complex digital infrastructures and human systems, my mission is to build resilience in an increasingly volatile world. With over 20 years of experience in Global MNCs, I’ve realized that protecting a network is only half the battle; the ultimate firewall is the clarity and alignment of the professional mind. ​I am a published author of three works that explore the architecture of security and the science of patterns: ​'The Interview': A deep dive into the technical and psychological nuances of Cybersecurity. ​'Cosmic Catalyst' & 'Beyond Constellations': Research into systemic cycles, predictive analytics, and ancient pattern-recognition frameworks. ​ My methodology is unique. By day, I audit global cybersecurity frameworks for US-based clients. Beyond the code, I am a dedicated researcher of Bio-Energetic Systems and Chronobiological Trends. I have successfully applied these 'multidimensional' patterns to predict global events and organizational shifts with high accuracy—bridging the gap between the measurable and the metaphysical. Through my research I offer high-performance philosophy to fellow cybersecurity professionals. My goal is to help leaders navigate 'zero-day' life challenges with the same precision they apply to their digitalecosystem. ​ I believe the future of leadership belongs to those who can traverse both the logical and the intuitive. I am here to help you audit your path to sovereign success.

With over 22 years of experience in the hosting industry, I've played a key role in developing and supporting several successful hosting companies. My expertise spans web hosting solutions, blockchain and cryptocurrency technologies, advanced technology infrastructure, domain name brokerage, artificial intelligence, technical writing, and strategic SEO implementation.