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 and organize IT security workshops.

Our beginner-friendly hacker workshop is back!

More info and registration linkā€¦

Become A Hacker


Mailing List

If you would like to receive updates about our meetups, upcoming CTF events (1-2 mails per semester), and 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