The largest one day Capture the Flag event, the Colleges Cyber-Security Challenge, took place on April 5th in Dublin City Centre. The fifth annual flagship event of its kind was brought to Dublin by ZeroDays CTF. ZeroDays started out with a simple aim to promote, develop and encourage participation in capture the flag security events in Ireland with an aim to identify and applaud Europe's brightest IT Security students and encourage them to pursue a career in cyber security.

1. Zero Days 2019