A School CTF event.
Official URL: http://school-ctf.org/
School CTF is the computer security competition for school pupils that is hosted by the SiBears team annually since 2010. School CTF traditionally takes place in autumn. Any team is welcome, not just that comprised of school pupils. The ratings are calculated separately for school teams and for all teams.
Who can pass me an Authentication string for signup, I signed up for a team, but no email be received yet.
Look at your spam folder