In the heart of Ireland’s thriving tech ecosystem, ZeroDays CTF stands as the nation’s most dynamic cybersecurity competition, captivating over 500 participants in 2025 and ranking among the world’s elite on-site Capture The Flag (CTF) events. Founded in 2015 by TU Dublin cybersecurity expert Mark Lane, this high-energy showdown at iconic Croke Park unites talent across schools, colleges, open, and international categories, challenging participants with mind-bending puzzles in cryptography, web security, forensics, reverse engineering, and more. From novices to seasoned pros, ZeroDays CTF is a dynamic crucible forging the cyber leaders of tomorrow..
ZeroDays CTF is Ireland’s premier talent incubator, fueling a robust pipeline for Team Ireland’s European Cyber Security Challenge (ECSC) squad, where top performers represent the nation in international competition. Events like the Irish Colleges Cyber-Security Challenge and the Cyber-Schools CTF drive a diverse talent pool, with 35% female representation and inclusive programs encouraging underrepresented groups. Notably, over 10% of TU Dublin’s first-year cybersecurity students credit ZeroDays as their career catalyst, while national competitions have boosted cybersecurity CAO applications, helping to address the global 3.4 million workforce gap. This pipeline delivers battle-tested, innovative talent directly to industry, ready to tackle real-world cyber threats and drive business resilience.
Embracing 2025’s playful “Father Ted” theme, participants donned quirky costumes for bonus points, infusing Ireland’s cultural charm into high-stakes challenges. From lockpicking workshops to VR gaming and a legendary afterparty, ZeroDays CTF blends fun with professional development, creating a community of cyber defenders poised for impact.
