Presentations
- SANS CTI Survey 2025 Webcast titled “Navigating Uncertainty in Today’s Threat Landscape” (online, 2025). (Webcast Recording).
- FIRST CTI Conference 2025 presentation titled “Decoding a Decade: 10 Years of Applied CTI Discipline” (Berlin, Germany, 2025).
- SANS Webcast titled “A Decade of CTI Evolution: Key Insights From Past CTI Surveys” (online, 2024).
- 2-hour Workshop @ BSides Athens 2024 titled “Block By Block: Building Your CTI Program” (Athens, Greece, 2024).
- SANS CTI Survey 2024 Webcast titled “Managing The Evolving Threat Landscape” (online, 2024). (Webcast Recording)
- Lecture @ Computer Science Department of University of Crete: “Cyber Shield Up: They Shall Not Pass” (Heraklion, Greece, 2024). (Slides)
- FIRST CTI Symposium 2023: “Spin Your CTI Process Round” (Berlin, Germany, 2023). (Youtube link, Slides)
- Panel Moderator @ 2nd ENISA Cybersecurity Market Analysis Conference : “Threat Landscape and Industry Response: Closing Vulnerability Gaps” (Heraklion, Greece, 2023).
- ENISA CTI-EU 2023: “When Cyber Meets Physical: Intelligence Collaboration” (Athens, Greece, 2023).
- Panellist @ Global security and hybrid warfare: “The role of cyber in hybrid threats” (Athens, Greece, 2023).
- ENISA CTI-EU 2022: “Setting Your CTI Process In Motion” (Brussels, Belgium, 2022).
- Guest Lecture @ DTU (Technical University of Denmark): “Welcome to the world of Cyber Threat Intelligence” (virtual, 2021).
- SANS CTI Summit 2021: “Still thinking about your Ex(cel)? Here are some TIPs” (virtual, 2021). (Youtube link)
- FS-ISAC Europe Virtual Summit 2020: “Technology Enablement in the Intelligence Cycle and the Role of TIPs” (virtual, 2020).
- ENISA CTI-EU 2020: “Technology enablement in the intelligence cycle and the role of TIPs” (Brussels, Belgium, 2020).
- SANS CTI Summit 2020: “Stop Tilting at Windmills: Three Key Lessons that CTI Teams Should Learn from the Past” (Washington, USA, 2020). (Youtube link)
- ENISA NIS Summer School 2019: “Intelligence Requirements (aka How you can stop tilting at windmills)” (Heraklion, Greece, 2019).
- FIRST CTI Symposium 2019: “5 years of applied CTI discipline: where should organisations put focus on?” (London, UK, 2019).
- ENISA’s CTI-EU 2018: “Let’s make CTI great (again): a 5-year look back in CTI” (Brussels, Belgium, 2018).
- Panel moderator at ENISA’s CTI-EU 2017: “CTI capabilities, skills, education training and research” (Rome, Italy, 2017).
- Secure South West 5: “Cyber Threat Intelligence: State-of-the-art and trends” (Plymouth, UK, 2015).
- USENIX’s FOCI ’11 Workshop: “CensMon: A Web Censorship Monitor” (San Francisco, USA, 2011).
Publications
- SANS CTI Survey 2025 Report titled “Navigating Uncertainty in Today’s Threat Landscape”. SANS (2025).
- SANS CTI Survey 2024 Report titled “Managing The Evolving Threat Landscape”. SANS (2024).
- ENISA Threat Landscape 2022. Threat Actor Trends. ENISA (2022).
- ENISA Threat Landscape 2021. Threat Actor Trends. ENISA (2021).
- ENISA Threat Landscape 2020. ENISA (2020).
- Roadmap on the cooperation between CSIRTS and LE. ENISA (2020).
- ENISA Threat Landscape 2018. ENISA (2019).
- Cooperation between CSIRTs and law enforcement: interaction with the judiciary. ENISA (2018).
- Exploring the opportunities and limitations of Threat Intelligence Platforms (TIPs). ENISA (2018).
- ENISA Threat Landscape 2017. ENISA (2018).
- Tools and Methodologies to Support Cooperation between CSIRTs and Law Enforcement. ENISA (2017).
- ENISA CERT Exercises and Training Material: Advanced persistent threat incident handling, Proactive Incident Detection, Incident handling during attack on Critical Information Infrastructure, Vulnerability Handling, Recruitment of CERT staff, Establishing External Contacts, Triage and Basic Incident Handling, Cooperation with Law Enforcement Agencies – Advising in Cyber Crime Cases, Assessing and testing communication channels between CERTs and all their stakeholders, Social networks used as an attack vector for targeted attacks . ENISA (2014)
- An Analysis of n-factor Authentication in eBanking Environments. International Journal of Information Assurance and Security (2014).
- Securing data in cyber space. ENISA (2014).
- eID Authentication methods in e-Finance and e-Payment services – Current practices and Recommendations. ENISA (2013).
- A professional view on eBanking Authentication: Challenges and Recommendations. 8th International Conference on Information Assurance and Security. Best paper award (2013).
- ENISA Threat Landscape mid year report 2013. ENISA (2013).
- Mobile Banking Authentication: Assessing the Robustness of Authentication Mechanisms. World e-ID Congress (2013).
- World Economic Forum Global Risks 2013. Digital Wildfires in a Hyperconnected World ( 2013). WEF (2013).
- ENISA Threat Landscape – Responding to the Evolving Threat Environment (2013). ENISA 2013.
- Censmon: A Web Censorship Monitor. Master Thesis. University of Crete. Computer Science Department (2012).
- CensMon: A Web Censorship Monitor. In Proceedings of the 1st USENIX Workshop on Free and Open Communications on the Internet (2011).
Instructing
- SANS Instructor for SANS FOR578 Cyber Threat Intelligence course (2023 – now).
- Instructor at FIRST CTI Symposium 2020 on “101 Training Session on Intelligence Direction and Intelligence Production (4 hours)” (2020).
- Instructor at ENISA’s NIS Summer School 2019 for CTI Training on “Intelligence Requirements” and “Intelligence Report Writing” (2019).
- Instructor at ENISA’s NIS Summer School 2018 for CTI Training on “Intelligence Direction” and “Intelligence Report Writing” (2018).
Tilting at windmills 