Competitions
Hands-on cybersecurity challenges
CTF competitions that turn curiosity into real skills. From local Sibiu roots to international events with 1,000+ total participants.
CSCTF 2026
Our annual flagship competition returns. 48 hours of challenges across web, crypto, forensics, pwn, and more. Three categories for different skill levels.
Competition Formats
How we compete
Annual Flagship
CSCTF is our main event, open to international participants
Conference Events
Custom CTFs supporting conferences and tech events
Educational
Formats for schools, universities, and training programs
Community
Smaller challenges between major milestones
Archive
Past editions
CSCTF 2025
580+ participants from 10+ countries, € 8,000+ prize pool, 7 educational partners, 5 sponsors.
View sponsors, partners & archiveCyberSea CTF 2026
Official CTF for CyberSea Festival — 40 themed on-site challenges at Diplomatic Mamaia, 28–30 July 2026.
Earlier Editions
From local Sibiu competitions to growing regional events