CTF?
Capture the Flag (CTF) is a special kind of information security competitions.
PoliCTF?
PoliCTF 2015 is a jeopardy style capture-the-flag competition that will be held both online and open to all competitors and live for a restricted number of participants.
The competition will start during the second day of the DIMVA 2015 conference that will be held in Milan (Italy) at 10/07/2015 09:00 UTC and will last for 48 hours.
PoliCTF @ realraum?
brain-destroying binaries, super-sick shellcode shenanigans, and challenging fun
(probably not open 48 hours, so please check realraum's SpaceAPI and/or ask on IRC, or contact Stefan).