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

There are no upcoming CTF events at the moment.

However, feel free to join our next monthly meetup!


iCTF 2019 Meetup 28 March 17:15 CET


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

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