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.
Welcome Day 2026
The Welcome Day 2026 is an event organized by JKU to introduce several teams and clubs to those starting out to study. Meet us there!
Discord and 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 join our Discord or subscribe to the announcement mailing list sigflag-announce@jku.at.
For other inqueries, please contact info ~ at ~ sigflag.at