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

HITCON CTF 2019 12 October 04:00 CEST
Newbie CTF 2019 2 November TBA
RuCTFE 2019 23 November 11:00 CET
TUCTF 2019 30 November 00:00 CET
OverTheWire Advent Bonanza 2019 December -
hxp 36C3 CTF 27 December 21:00 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


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