Welcome to SIGFLAG

SIGFLAG is a CTF team based in Linz, organised by motivated students of JKU Linz.

We regularly participate in Attack-Defense security competitions.


Upcoming Events

FAUST CTF 219 25 May 14:00 CEST

FAUST CTF 2019

We will participate in the FAUST CTF 2019 competition! Click for more!

Our team is sponsored in this event by VACE Security and Dynatrace.


Mailing List

If you would like to receive updates about our monthly meetups (once per month), upcoming CTF events (1-2 mails per semester), internal training and workshop sessions (irregularly) you should subscribe to the announcement mailing list sigflag-announce@jku.at.


Subscribe to sigflag-announce


Train your hacking skills

We recently hosted an IT Security Workshop. If you want to continue hacking our challenges, click on the banner below to visit play.sigflag.at.


Become a Hacker

For other inqueries, please contact info ~ at ~ sigflag.at