SANS Holiday Hack Challenge / KringleCon 2026
December 1, 2026 - January 5, 2027
🎄 The SANS Holiday Hack Challenge (KringleCon) is a free, online cybersecurity CTF and virtual conference that runs every December. All skill levels welcome — features dozens of hands-on challenges, guest speakers, and prizes. One of the most beloved free events in the security community.
🔗 Register free at sans.org/HolidayHack
