SharkFest'26 Europe

André is a senior Performance Consultant and troubleshooter at Rabobank, and has been analyzing packets for over 30 years. He started his career as a troubleshooter for network issues, both hard- and software, and later specialized in performance testing, which requires a combination of in-depth knowledge of networking protocols and coding skills. André also contributed to the Wireshark project.

• Head of Networking and Telecommunication at City of Kassel
• Author for several IT-Magazines (Heise, iX, IT-Administrator)
• VoIP and Network Consultant
• Freelance Trainer
• System Administrator for Telecommunication and Networking at City of Kassel
• Service Technician at Deutsche Telekom

Ex-Cisco Fellow & Ex-Huawei Intelligent Operations Management CTO, Benoit created his own consulting “Everything OPS” company focused on his passion: Autonomous Driving Networks vision.
Benoit has been focusing on config management, network automation, data-model driven management. The latest focus is on data collection, service assurance, with the model-driven telemetry for closed loop automation, on digital map, intent, and knowledge graph and a renewed interest for IPIFX… as building blocks to reduce the cost of managing networks.
Benoit is currently the co-chair for the IETF OPSAWG and NMOP WGs, and served a 6 years term as IETF Operational and Management Area Director, exclusively focused on the YANG models standardization, along with automatic configuration (via NETCONF, RESTCONF, YANG-Push).
Books: Network Programmability with YANG: “ The Structure of Network Automation with YANG, NETCONF, RESTCONF, and gNMI” and “Network management: Accounting and Performance Strategies.”

Christian Landström is the Head of Siemens CERT. In his previous roles over the past 15 years, he worked as CSIRT Lead DACH for NVISO Security, as Head of Managed Security Services at GDATA Advanced Analytics and as Incident Response and security audit expert for Airbus Cybersecurity. He shares his passion about network analysis together with Jasper and Eddi with whom he started working in the field of network security and cyber security back in 2006 and since then has been an integral part of the Sharkfest Community for over 15 years now.

Daniel Spiekermann has more than 20 years of experience in communications technology and worked for many years as a forensic scientist for various law enforcement agencies, focusing on computer and network forensics. After completing his doctorate at the FernUniversität in Hagen in 2019, he began working as a professor of digital forensics at the Lower Saxony Police Academy in 2020. Since 2023, he has been teaching as a professor of distributed systems at the Dortmund University of Applied Sciences and Arts, conducting research on virtual networks and digital forensics.

For over 20 years, Eddi has been looking at network protocols to find (or rule out) network problems, vulnerabilities, ongoing hacking attacks or just for fun.

Working for the Swiss train company BLS as IT security analyst, he is reviewing the configuration of a multitude of systems to improve the overall security of the domain. Wireshark is one of the tools to verify the outcome of a configuration change.

Shameless promotion: Visit https://www.bls.ch/en/freizeit-und-ferien/ausflug to find some of the best destinations in Switzerland.

For over 20 years, Eddi has been looking at network protocols to find (or rule out) network problems, vulnerabilities, ongoing hacking attacks or just for fun.

Working for the Swiss train company BLS as IT security analyst, he is reviewing the configuration of a multitude of systems to improve the overall security of the domain. Wireshark is one of the tools to verify the outcome of a configuration change.

Shameless promotion: Visit https://www.bls.ch/en/freizeit-und-ferien/ausflug to find some of the best destinations in Switzerland.

Jean-Paul has been working as a System and Network Engineer for 40 years. Since 2010, he runs his own company and is mainly focused on network training and consultancy. He is the author of several books for the French publisher ENI: VPN, IPv6, Cisco ASA, Postfix. He was also recently asked by the French company Techniques de l’Ingénieur to write several articles about VPNs for their Encyclopedia. He regularly gives training sessions on Wireshark and other network-related topics. As a certified trainer, he also delivers training about VPNs and network security for WatchGuard resellers and clients

Johannes works as a network security consultant at SVA System Vertrieb Alexander GmbH in Germany, holding a master's degree in IT Security with a specialisation in IPv6 Security. He excels in implementing next-gen firewalls, DNS appliances, and IPv6 connectivity at customer sites. As a trainer, Johannes conducts classes on IPv6 and DNS, focusing on in-depth technical discussions and security features. His insights and tutorials on IPv6, VPNs, DNSSEC, NTP, Wireshark, and enterprise-grade firewalls (Palo Alto Networks, Fortinet) can be found on his blog at https://weberblog.net/.

For German listeners, he hosts the Security-as-a-Podcast, https://securityasapodcast.de/.

Katherine is a tech professional with 4 years of experience, having retrained in her 40s to become a Computer Expert, specialising in System Integration. Originally from New Zealand, she is currently based in Germany. During her training, she undertook a practicum at SevenShift, a boutique IoT cybersecurity company in Cologne that recognised her talent and dedication, ultimately hiring her. She is now employed there, where she is honing her skills and contributing to the company's security initiatives. Outside of her professional life, Katherine is a dedicated single mother to a teenager. She is a member of the Haecksen, the FINTA branch of the CCC, and a Chapter Leader of OWASP Cologne.

Luca Deri is the leader of the ntop project (www.ntop.org), aimed at developing an open-source monitoring platform for high-speed traffic analysis and cybersecurity. He worked for the University College of London and IBM Research, before receiving his PhD at the University of Berne with a thesis about software components for traffic monitoring applications. Well-known in the open-source and Linux community, he currently shares his time between the ntop project and the University of Pisa where he has been appointed as a lecturer in the CS department.

Marcelle brings over twelve years of experience in cybersecurity, and her journey has taken her through some of the most elite teams in the field, including Secureworks Counter Threat Unit (CTU) and the Equinix Threat Analysis Center (ETAC). She's a security consultant, threat researcher, educator, and intel analyst with deep expertise in cyber threat intelligence, digital forensics, intrusion analysis, security operations, and technical writing.

She has contributed to both government and private sector initiatives, bringing a well-rounded perspective to cyber defense and threat research. Before transitioning into cybersecurity, Marcelle led operations and managed complex projects across various industries.

A frequent speaker at conferences and training events, Marcelle is deeply committed to advancing the cybersecurity field and empowering the next generation of professionals.

Megumi Takeshita, packet otaku, runs a packet company, ikeriri network service in Japan. Ikeriri offers services such as packet analysis for troubleshooting, debugging, security inspection. Ikeriri is also a reseller of wired/wireless capture and analysis products. Megumi has authored 10+ books about Wireshark and packet analysis. She also instructs Wireshark for Japanese companies, including the Japan Self-Defence Forces and Chuo University, as a lecturer. She is one of contributors to the Wireshark projects including Japanese localization.

Helping customers and engineers to understand problems with communication protocols in their networks.
Debugging communication protocols and analyzing log files for a living and having fun with it.
Finding problems in software since the era of punched tapes.
Currently Freelance

Sake has been analyzing packets for over 25 years. During his work, Sake started developing functionality for Wireshark while working with the analyzer in his day-to-day job. He also enhanced multiple protocol dissectors. In 2007, Sake joined the Wireshark Core Development team. In 2009, After working for a reseller of networking equipment for 8 years, he started the company SYN-bit to provide network analysis and training services to enterprises across Europe.

Writes software that talks to hardware.
Then helps colleagues and customers understand why the device does respond the way (they think) it should.

Stephen Hemminger is a member of the DPDK technical board who wrote the pcapng library and dpdk-dumpcap tool. He worked for many years at Microsoft, Brocade, and Linux Foundation contributing to networking related open source projects including the Linux kernel. Since retirement he spends more time on open source! He co-maintains iproute2 and several DPDK components.

Tom Cordemans is a senior lecturer at the Odisee University of Applied Sciences and a researcher at the DistriNet Research Unit of KU Leuven in Ghent, Belgium with a strong focus on IT, IoT and OT networks. He is a daily user of Wireshark and sharing knowledge and expertise is his trigger to give workshops and presentations.

Uli has been working somewhere between IT/OT infrastructure and IT/OT security for more than two decades. His current position is ‘IT Security Architect’ at Krones AG. He has been a member of the Core Developer Team since 2021.