The Capture the Flag (CTF) event organized by Hackfest is a bilingual information security event and the largest hacking gathering in Canada. It offers a range of hacking challenges, including talks, villages, lockpicking, social engineering CTF, soldering, IoT, RFID, electronics, augmented reality, amateur radio, and more. Participants can engage in interactive activities, competitions, and learning sessions related to cybersecurity and hacking culture.