Informatik-Studierende der JKU SIGFLAG und der FH Hagenberg qualifizierten sich für das Finale des internationalem „Hacker“-Wettbewerbs VolgaCTF. 📷 oben: Markus Vogl, Tobias Höller; unten: Mario Kahlhofer, Thomas Pointhuber

Our team member Michael Roland wrote about exploiting Buggy .Net from #hitconctf ;) sigflag.at/blog/2019/writ…

#ructfe2019 was a great pleasure! Thanks to RuCTFE ! And here is the write-up for the single flag in engine that we stole from NARF! ;) sigflag.at/blog/2019/writ…

Merry Christmas everyone! As a special we play the Musical Stegano challenge from OverTheWire.org on real synthesizers. Enjoy! :) youtube.com/watch?v=QqEPEl…

Had a lot of fun escaping the maze on the final day of OverTheWire.org - check out my write-up if you are curious sigflag.at/blog/2019/writ…

Even an up-to-date #log4j 2.17.2 didn't stop us from extracting secrets from the environment. Read how we used a ReDoS side channel attack in #GoogleCTF sigflag.at/blog/2022/writ…

We are looking forward to our very first hackathon! It will take place on September 17th in the GRAND GARAGE at the Tabakfabrik Linz. Please register at forms.gle/bEU3Typ8bvxCBh…

Missing the taste of hacker air? We start the new semester with the 2nd edition of our beginner-friendly IT security workshop. Register for free! sigflag.at/become-a-hacke…

Wow, your interest in our workshop is amazing!! Due to an update of our compression algorithm we now have even more free seats for you! sigflag.at/become-a-hacke…

THANKS to 100+ hackers that visited our BECOME A HACKER workshop today! This was AMAZING! Shoutout to Jürgen Weiss from ARES CI & Dynatrace & epunkt for sponsoring us. See you at the next competition!

Want to play some CTFs in the upcoming weeks? Join SIGFLAG on-site in Linz when we participate in #HITCONCTF2022 (26.11, today), do a TryHackMe beginner session (07.12) or attend the bi0sctf (17.12) - details at sigflag.at/events

And Backdoor CTF 2022 comes to an end! Congrats to the winning teams 🎉 #Drovosec, Black Bauhinia, SIGFLAG Thanks everyone for participating and see you next year ❤️

Let's kick-off 2023 with a comprehensive write-up by Robert Führicht on the SadServers SRE/DevOps challenges sigflag.at/blog/2023/writ…

New blog post by our teammate Robert on the recently released SadServers SRE/DevOps challenges Pokhara and Roseau sigflag.at/blog/2023/writ…

New audio data decoding write-up by our team mate Daniel on decompressme-2 from pbctf 2023 perfect blue sigflag.at/blog/2023/pbct…

Big shout-out to Daniel Hofer for being the first one in our team to get into the CVE index! ;)

Learn a few things about ext4 and Java decompilation in a new blog post by our teammate Robert on the recently released SadServers SRE/DevOps challenges Kihei and Belo Horizonte sigflag.at/blog/2023/writ…

9th place at SaarCTF together as KuK Hofhackerei with SIGFLAG We_0wn_Y0u Team Austria ECSC and more! Thanks saarsec for organizing, Joe Pichlmayr and CSA for sponsoring accomodations for our guests, and IAIK TU Graz for providing the space!

Peak from #glacierctf was a challenge with three ingredients: (1) An XSS vulnerability, but with (2) a strict CSP that made it impossible to include external JS scripts, and (3) a bullet-proof implementation of an image upload contact form. We hacked it anyway. Read on. (1/5)

We played Midnight Sun this weekend and took 1st place as a merged team with LosFuzzys and SIGFLAG! Excited to meet all the other finalists in Stockholm for the MIDNIGHT SUN Finals Huge thanks to HackingForSoju for organizing the CTF and keeping it fun right to the end