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Established in 2008 with the vision of democratizing information within the field of Cybersecurity, this community has garnered significant traction over its 16-year journey. Monthly, it attracts a diverse readership numbering in the thousands, all actively engaged in the pursuit and dissemination of cybersecurity knowledge.

Acknowledging the challenges presented by the increasingly dynamic VUCA (Volatility, Uncertainty, Complexity, and Ambiguity) environment, our primary mission is to contribute collaboratively to the holistic development of the cybersecurity community. This is achieved through the ongoing training and education of our dedicated readers and followers.

Presently, our community boasts a membership exceeding 130,000 CyberHumans, actively exchanging information and participating in real-world collaborative endeavors within the cybersecurity domain. Our readership spans more than 70 countries globally, encompassing a broad spectrum of professionals. Among them are Chief Information Security Officers (CISOS) and Chief Security Officers (CSOs) from leading global corporations, high-ranking government and private sector professionals, experts in fraud prevention and auditing, executive directors, consultants, managed security service providers, technical specialists, resellers, and marketing professionals. The diversity of our readership underscores the community’s inclusive and comprehensive nature.

Welcome to CISO2CISO Cyber Security Group.


Our cyber advisors team

Marcos Jaimovich


With an illustrious career spanning over two decades, Marcos Jaimovich stands as a distinguished cybersecurity expert. As a co-founder of CISO2CISO Global Cybersecurity Group, he has played a pivotal role in architecting a dynamic platform that seamlessly connects Chief Information Security Officers (CISOs) on a global scale, fostering a collaborative environment for the exchange of cutting-edge insights into cybersecurity threats and solutions.

Throughout his professional journey, Marcos has earned acclaim for his strategic advisory services in cyber and risk management. His counsel has been sought after by numerous organizations seeking a forward-thinking and proactive approach to cybersecurity. Marcos has consistently demonstrated a profound understanding of the cybersecurity landscape, providing invaluable guidance to organizations of diverse scopes and industries.

In addition to his advisory responsibilities, Marcos assumes a key role in fostering innovation within the cybersecurity domain. He serves as a trusted advisor to cybersecurity startups, leveraging his extensive expertise to guide emerging ventures towards success in an ever-evolving digital terrain. 

Beyond his advisory capacities, Marcos is deeply committed to imparting knowledge and promoting best practices in the cybersecurity realm. His dedication to education extends to a prominent presence on LinkedIn, where he shares insightful perspectives, engages with the broader cybersecurity community, and cultivates meaningful professional connections.

As a forward-thinking cybersecurity advocate, Marcos Jaimovich continues to shape the landscape of cybersecurity practices. His commitment to excellence and resilience positions him as a stalwart figure in ensuring a secure digital future for individuals and organizations alike.

Diego Esteve


Diego has more than 25 years of professional experience in information security, digital fraud prevention, computer auditing and IT risk management, gained in leading private and public companies – BANKING, PAYMENT MEANS and ENERGY.
Over the last 15 years he has held various leadership and management positions in Cybersecurity – Cybersecurity Manager – CISO, Cybersecurity Governance Manager, Fraud Prevention Manager – at Banco Galicia, Banco Supervielle & YPF.
He currently holds the position of CISO at Prisma Medios de Pago SA.

Throughout his career, he has sought to develop himself through various international certifications related to his area of specialisation, such as CISSP, CISA, Lead Auditor ISO-27001; Sr. Manager ISO-27032 and others related to processes and technologies such as: Certified DevOps Generalist, Scrum Master – International Scrum Institute, etc.

Participation as a speaker in different national and international conferences, such as: IBM Think, Latam Business School, Financial Services Technology Summit, Forum, AMBA Banking Marketing Association, SegurInfo, etc.

In parallel with his professional development, he has taken on different roles in the educational field, teaching different subjects at university level, both undergraduate and postgraduate courses. Among the institutions where he has taught are University of Palermo, CEMA University and Latam Business School.
For the last two years, he has been involved in the development of the Bachelor’s Degree in Cybersecurity at the University of Palermo, acting as its co-director

julio ardita


Julio is an expert cybersecurity consultant with more than 25 years of practical experience, and provides professional services in the areas of cybersecurity strategy and transformation, cybersecurity in industrial environments (OT), security in payment methods, and investigation and response to cyber-incidents. .

In 1996 he founded CYBSEC, the first cybersecurity company in Argentina. In 2016 CYBSEC was acquired by Deloitte. Julio served as Partner in Deloitte’s Cyber Risk practice and was Leader of CIR – Cyber Incident Response Services in Spanish-LATAM until 2022.

Julio has a Bachelor’s degree in Systems from John F: Kennedy University and a Master’s degree in Telecommunications from the Polytechnic University of Madrid. He has CISM and ISO 27001 Lead Implementer certification and is a professor of 5 master’s and postgraduate degrees in Information Security and has given more than 200 conferences.

He has worked on hundreds of cybersecurity projects for the main companies in Argentina and Latin America.



Santiago Fernandez has a degree in Technology from the University of Palermo, a Master in Information Security from the University of Murcia and different certifications such as CISSP | CISM | CDPSE | CCSK | CSX | MCSA | SMAC™ | DSOE | DEPC | CSFPC | CSFPC | 5x AWS Certified.

He is currently CISO at Klar, a Mexican Fintech. He was fortunate to be awarded as CISO of the Year in Argentina in 2021 and was among the Top 100 CISO’s in the World in 2022.

A lover of new technologies, he has developed a career in DevSecOps and Cloud Security at Eko Party, the largest security conference in Latin America.

Brian O’Durnin

IT / OT Cyber Security Advisor

Brian O’Durnin is a cybersecurity expert with an unwavering commitment to innovation and advancement, constantly challenging conventional practices with his analytical approach and “Out of the Box” thinking. With more than 30 years of experience in information systems management, he has cultivated a solid professional background that encompasses Service Support, Systems Architecture, and Information Security. Brian has broadened the scope of cybersecurity to include industrial processes (OT), demonstrating his comprehensive expertise.
In his role as Chief Information Security Officer (CISO) at Argentina’s largest oil and energy company, Brian led initiatives for Information Protection and Cybersecurity in both traditional IT and industrial operations. He led a transformative effort towards the SAFE-VIGILANT-RESILIENT Triad, ensuring a holistic approach to security.
In 2019, Brian received the prestigious CISO of the Year award from the user community during SegurInfo Argentina, acknowledging his outstanding contributions. Since then, he has been a member of the Academic Committee of Segurinfo (USUARIA).
In 2021, Brian was commissioned by Universidad del Norte Santo Tomas de Aquino (UNSTA) to pioneer the inaugural diploma program in Industrial Cybersecurity (ICS-OT) for the region. The program’s excellence was acknowledged, as students demonstrated their abilities via real-world industry case studies, attesting to its exceptional academic quality and efficacy.

Hernán Veglienzone


Hernán is a cybersecurity executive and expert with 27 years of experience in Cyber Security, including strategic definition, development and project management. He has directed multiple strategic Information Security Crítical Projects in leading companies and led multicultural teams in the European and Latin American markets.

He has extensive technical, consultant, marketing and management Cybersecurity experience in Financial, Banking, Retail, Petroleum, Consulting, Automotive, Security, Manufacturing, Telecommunications industries, among others.

He has a broad range of experience across multiple disciplines within cybersecurity, this includes understanding various aspects such as network security, application security, cloud security, risk management, compliance, architecture, business continuity and incident response, etc.

 Additionally, he is a speaker and international instructor of courses and seminars related to cybersecurity, both in the civil and military fields. He is the author of articles and notes for major newspapers, television stations and magazines in the national and international market.

Currently he is the Cybersecurity Senior Director – CISO for Latin America & USA at Cirion Technologies and before he held executive positions related to information security in multinational companies.

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