The TF-CSIRT Steering Committee coordinates the activities of the Task Force. It is comprised of the TF-CSIRT Chair, the TF-CSIRT Secretary (ex-officio) and four elected representatives.

The TF-CSIRT Chair is elected every two years. The other elected representatives also serve two year terms, but the terms are staggered so that two representatives are elected each year. Elections are normally held during TF-CSIRT meetings in September. If you are interested in participating as an SC member, we have prepared some information that might be useful as to the commitment involved.


The Steering Committee has the following responsibilities:

  • Coordinating the activities of TF-CSIRT and recommending courses of action where issues occur.
  • Making decisions on CSIRT accreditation and certification in accordance with the guidelines agreed by the TF-CSIRT membership.
  • Reviewing the performance of the Trusted Introducer service and making recommendations to modify or expand it.
  • Overseeing the development of the TRANSITS training curricula and course materials, monitoring tutoring standards, and registration of tutors.
  • Advising on future developments and strategic directions in computer security.
  • Providing input on meeting agendas.


Silvio Oertli, TF-CSIRT Chair

Silvio Oertli is the Head of SWITCH-CERT (Universities & Registry). Before joining SWITCH-CERT, he has been working in IT investigation for law enforcement agencies since 2008. Started as an project manager, he went into the field of digital forensics and last as deputy head of the investigation service at the Cybercrime Competence Center of the Zürich cantonal police. Before his career as an IT investigator, he gained several years of IT industry experience as a project manager, software developer and systems engineer for 911-dispatch-software. Silvio is a trained IT forensics trainer and teaches digital Forensics at the University of Applied Sciences in Business Administration Zurich . In addition to his IT engineering degree, he holds a Bachelor of Law.
Silvio has been on the Steering Committee since September 2018 and the Chair of TF-CSIRT since September 2019.

Shehzad Ahmad, Steering Committee Member

Shehzad has been working within Information Security for 20 years. Currently he works in Nets as Head of Information Security, Denmark. Before joining Nets, Shehzad was Head of DKCERT for 7 years. Shehzad has been a member of the TF-CSIRT community since 2007. From 2007 till 2015 as a TI-member and since 2015 as a TI Associate. Shehzad is also (since 2007) a member of FIRST. In Denmark Shehzad was the co-founder of The Danish Council for Digital Security which is an independent member organization with specialized knowledge and experience within information security and data privacy – and since 2012 he has been a board member of the council. For more than 10 years Shehzad has been sharing his knowledge and thoughts on Information Security by writing columns in newspapers. Shehzad was elected to the Steering Committee in September 2017.

Sven Gabriel, Steering Committee Member

Sven Gabriel is a senior technical researcher at Nikhef, the Dutch National Institute for Subatomic Physics. He has a background in Computational Chemistry and Climate modelling and worked on a wide range of IT and IT security activities in various international projects. In his current position he is working on operational security in, a publicly-funded federation of over 300 data and computing data centres spread across Europe and worldwide, serving over 60000 users from a wide range of fields. In this function he successfully drove the process to make EGI-CSIRT a certified team within Trusted Introducer (TI). Here he ran Security Drills on a global scale, challenging the Incident
Response capabilities of the various security teams active in EGI. In the same project, he also coordinated training addressing various technical and high level managerial problems in Incident Response for distributed infrastructures. Sven  Gabriel received his Ph.D from RWTH Aachen University with a dissertation about Theoretical calculations of Circular Dichroism spectra of Bio-Organic compounds.

David Byers, Steering Committee Member

David Byers is head of the IT infrastructure office at Linköping University where his responsibilities include leading the university’s CSIRT and information security group. As team leader he has made development of the CSIRT’s capabilities, maturity, and engagement with communities such as TF-CSIRT a priority, including certification through Trusted Introducer. David has been active in the areas of system and network administration for nearly thirty years, with a particular focus on system and application security for the last fifteen. He was awarded a PhD in Computer Science from Linköping University with a disseration related to software security.

Rossella Mattioli, Steering Committee Member

Rossella Mattioli joined ENISA, the European Union Agency for Cybersecurity, in 2013. Over the years she worked on threat modelling and security measures for Internet infrastructure, ICS/SCADA, smart grids, Internet of Things, smart cars and airports. She is currently focusing on strengthening European Union incident response capabilities by supporting the “CSIRTs Network” established by the 2016 Network and Information Security Directive and the TF-CSIRT “Reference Security Incident Taxonomy” Working Group. Her goal is to support European incident response teams in building and advancing their incident response expertise to face future cyber-attacks. Rossella holds a MSc in Cybersecurity from TalTech – Tallinn University of Technology with a thesis on information exchange framework for cyber security incidents.  She has a background in intranet management, having worked for 9 years as the intranet manager of a major financial group in Italy.  

Rogério Raposo, Steering Committee Member

Rogério Raposo is the Head of the CERT.PT (Portuguese National CSIRT), which operates under the National Cybersecurity Centre (CNCS), in Portugal. Before joining CNCS in 2014 Rogério was in the Law Enforcement community, with different operational responsibilities and roles, which included IT and Information Security responsibilities in his last 6 years in that community. Rogério had his Bachelor of Science in the Military Academy in 2002, which was followed by several post-graduate courses in Information Security and IT, and a has a Master of Science in Information Security and Law in Cyberspace. At CNCS and CERT.PT Rogério has a special interest on the development of CSIRTs capabilities and maturity, aligned with the common interest in these fields followed by both Portuguese and international CSIRT communities.

Andre Oosterwijk, Steering Committee Member

Andre Oosterwijk is a Senior Security Specialist – Incident Response at KPN CERT. He has worked in the public sector from 1997-2015 in different roles related to Incident response and security analysis at the Ministry of Defence and the National Cyber Security Centre (NCSC-NL). His first TF-CSIRT meeting was in 2007 and he is an active participant in the community since then. The past years Andre worked for several multinational companies on Incident Response/Forensics and SOC/CSIRT deployment. Since 2017, he is working at the Dutch telco KPN as part of the KPN-CERT team.  

Nicole Harris, Steering Committee Member

Nicole Harris joined GÉANT in March 2013 as a Project Development Officer to support the global GÉANT Community Programme. She works primarily in the security and middleware areas and specialises in managing global IT initiatives, policy and legal issues and open source developments. Nicole is responsible among other activities for TF-CSIRT, GÉANT’s forum for CSIRTS, and works to support GÉANT’s successful TRANSITS training programme as well as managing a variety of security related projects for National and Research Education Networks (NRENs). Prior to joining GÉANT, Nicole worked at JISC for 10 years, supporting a range of programmes and services in the middleware, research and open source spaces.

Nicole holds a Master of Arts degree in Children’s Literature, which has been more useful in her technical career than people might think.


The Steering Committee normally meets at each TF-CSIRT meeting. Meeting summaries will appear here.