A CTF contest for hackercons and private events is a Capture The Flag (CTF) developed by elttam, which we run at security conferences and also for technology companies as part of developer training and private hackdays. We enjoy creating fun and engaging hacking contests for a range of backgrounds.

Current Edition: The Return of Hahn - Finding the worthy

Security Conferences

CTF competitions for technical conferences. Difficulty ranges from accessible to enthusiasts through to brutal.

Developer Training

CTF levels to assist with teaching security to developers. Identify, understand, exploit, and patch a range of weaknesses.

Private Hackdays

CTF events to help build and sustain security awareness via hacking contests for a range of technology backgrounds.



Contact us to discuss your requirements for your next public CTF or private hackday.

  • +61 02 8004 5952
  • Suite 3, Level 27, 1 Farrer Place, Sydney, NSW Australia
  • 36-38 Gipps Street, Collingwood, Victoria Australia