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

OverTheWire Advent Bonanza 2019 1 - 25 December  
hxp 36C3 CTF 27 December 21:00 CET
UCSB iCTF 2020 6 March 2020 TBA


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. Subscribe to our mailing list to stay informed about upcoming workshops.


Become a Hacker

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