Zero Days Security

Capture the Flag and Security Training

- About Us

Zero Days organise and promote cyber-security challenges, commonly known as capture-the-flag (CTF) events. Our aims are to promote, develop and encourage participation in CTF events in Ireland. We run a number of our own events each year and also run custom in-house events for corporations, schools and colleges. Our flagship event, the Irish Colleges Cyber-Security Challenge, aims to showcase and identify the best cyber-security students in the country.

Zero Days CTF was launched in 2015; a national cyber-security competition aimed at students, university graduates and ICT professionals. This event has a clear mission: to find new and young cyber talents and encourage young people to pursue a career in cyber-security. With an estimated 300 participants expected for this year’s competition, it will be one of the largest on-site CTF events globally. 

To find out more about any of our upcoming events (inculding our new ITB Cyber Schools Event) please check out the events page.

If you would like to get involved as a sponsor or have your own event then please contact us at


- Some Past Events


Malaga, October 2017
Zero Days Security once again organised the qualifying rounds, training and team selections for the Irish team for European Cyber Security Challenge.


RDS, October 2017
Zero Days Security provided interactive code breaking and security challenges for the Institute of Technology Blanchardstown to promote their Digital Forensics and Cyber Security courses at the 3 day event.

BSides Belfast

Belfast, September 2017
Zero Days Security were delighted to be part of BSides Belfast 2017. We were on site providing a fun challenging CTF event for all.


ITB, June 2017
Zero Days Security helped with challenges for ITB's Cyber Security Summer camp for students aged 13-18

Zero Days CTF

Dublin, April 2017
Irish colleges CTF event with over 50 teams competing to be crowned Irish Champions.


LYIT, Jan 2017
We ran a training day for the Letterkenny IT Ethical Hacker Society and also provided the platform and challenges for their Inter-colleges CTF event.