Welcome to SIGFLAG
SIGFLAG is a CTF team based in Linz, organised by motivated students of JKU Linz. We regularly participate in CTF security competitions and organize IT security workshops.
Welcome Day 2026
We’ll be present at the JKU Welcome Day on 2026-02-27 15:00-18:00 in the main building. Here is the summary of the presentation:
- Discord or mailing list: see below
- Next online CTF on 2026-03-28 14:00 - details via Discord
- Meet us: Open online regulars’ table (Stammtisch) every last Thursday of the month
- If you want to join, it would be useful if you know some of these:
- Coding
- Git
- Docker
- Linux
- Web DevTools
- C, assembly or other low-level-programming
- We are also there to have fun, not to teach you – that’s on you and your motivation. We can give you some pointers and resources for self-learning though.
- Become a part of the Austrian CTF-Community and join the ACSC qualifier starting March 1st at acsc.land
- Individual contest - last year 3 SIGFLAG members qualfied for the finals
- Finals in Linz in 2026
- We compete internationally as part of the KuK Hofhackerei - the Austrian CTF team union.
- More training challenges: ctf.cyber-jr.at
- Meet us at WKO OÖ Cyber Connect next monday 2026-03-02 17:00-20:00.
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