The THCon (Toulouse Hacking convention), is a French cybersecurity conference that brings together hobbyists, professionals and researchers every year at Toulouse in April.
The pre-challenge for this year is out now
𝗧𝗛𝗖𝗢𝗡 𝟮𝟬𝟮𝟲 𝗣𝗿𝗲𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲
— THConvention (@ToulouseHacking) March 29, 2026
Hey everyone, the time is close that THCity will need your help. From suspicious activities in the northern disctrict to sudden SOC alerts, we need every talent there is to help save THCity from an unknown peril. 👇 pic.twitter.com/hfNQ3mLOSF
Information regarding potential changes/hints are given in the discord server .
This year a particular care has been given to the lore, and you can expect that to go on with the CTF !
And this year, we solemnly swear that the first flags come without any traces of steganography whatsoever !
Have fun hacking !