Sept. 21, 2021, 6:17 p.m. "Hack.lu CTF 2021" dates changed.

Sept. 20, 2021, 8:12 p.m. "PBjar CTF '21" scoreboard added.

Sept. 20, 2021, 1:10 p.m. "DeconstruCT.F" published.

Sept. 20, 2021, 1:10 p.m. "NITECTF" is publically votable.

Sept. 20, 2021, 1:10 p.m. "NITECTF" published.

Sept. 20, 2021, 1:09 p.m. "Securebug.se CTF Freya 2021" is publically votable.

Sept. 20, 2021, 1:09 p.m. "Securebug.se CTF Freya 2021" published.

Sept. 20, 2021, 1:09 p.m. "hxp CTF 2021" is publically votable.

Sept. 20, 2021, 1:09 p.m. "hxp CTF 2021" published.

Sept. 20, 2021, 1:06 p.m. "0CTF/TCTF 2021 Finals" dates changed.

Sept. 20, 2021, 1:49 a.m. "Sunshine CTF 2021" scoreboard added.

Sept. 19, 2021, 10:54 p.m. "Midnight Sun CTF 2021 Finals" scoreboard added.

Sept. 19, 2021, 4:26 a.m. "Trend Micro CTF 2021 - Raimund Genes Cup - Online Qualifier" scoreboard added.

Sept. 18, 2021, 9:15 p.m. "H@cktivityCon 2021 CTF" scoreboard added.

Sept. 17, 2021, 8:51 a.m. "VolgaCTF 2021 Final" scoreboard added.

Sept. 13, 2021, 8:01 a.m. "COMPFEST CTF 2021" scoreboard added.

Sept. 13, 2021, 3:34 a.m. "RCTF 2021" scoreboard added.

Sept. 12, 2021, 9:23 p.m. "CSAW CTF Qualification Round 2021" scoreboard added.

Sept. 12, 2021, 4:19 p.m. "ChaffCTF 2021" published.

Sept. 12, 2021, 8:09 a.m. "TsukuCTF 2021" scoreboard added.

Sept. 11, 2021, 10:36 a.m. "DeconstruCT.F" dates changed.

Sept. 11, 2021, 10:36 a.m. "DeconstruCT.F" is postponed.

Sept. 11, 2021, 8:48 a.m. "H@cktivityCon 2021 CTF" is publically votable.

Sept. 11, 2021, 8:48 a.m. "H@cktivityCon 2021 CTF" published.

Sept. 11, 2021, 8:48 a.m. "DeconstruCT.F" is publically votable.

Sept. 11, 2021, 8:48 a.m. "DeconstruCT.F" published.

Sept. 11, 2021, 8:48 a.m. "TsukuCTF 2021" published.

Sept. 10, 2021, 3:25 p.m. "TMUCTF 2021" scoreboard added.

Sept. 8, 2021, 12:30 p.m. "TSG CTF 2021" is publically votable.

Sept. 8, 2021, 12:30 p.m. "TSG CTF 2021" published.

Sept. 8, 2021, 9:45 a.m. "DeconstruCT.F" dates changed.

Sept. 6, 2021, 11:26 a.m. "ALLES! CTF 2021" scoreboard added.

Sept. 6, 2021, 9:12 a.m. "K3RN3LCTF" is publically votable.

Sept. 6, 2021, 9:12 a.m. "K3RN3LCTF" published.

Sept. 6, 2021, 9:12 a.m. "M*CTF 2021 Quals" is publically votable.

Sept. 6, 2021, 9:12 a.m. "M*CTF 2021 Quals" published.

Sept. 6, 2021, 9:11 a.m. "Sunshine CTF 2021" is publically votable.

Sept. 6, 2021, 9:11 a.m. "Sunshine CTF 2021" published.

Sept. 6, 2021, 5:44 a.m. "Tamil CTF 2021" published.

Sept. 5, 2021, 5:02 p.m. "GrabCON CTF 2021" scoreboard added.

Sept. 5, 2021, 1:08 p.m. "Tamil CTF 2021" dates changed.

Sept. 5, 2021, 1:08 p.m. "Tamil CTF 2021" is postponed.

Sept. 4, 2021, 4:35 p.m. "Reply Cyber Security Challenge 2021" published.

Sept. 4, 2021, 4:34 p.m. "Collegiate SECTF" published.

Aug. 31, 2021, 9:45 a.m. Team "KMA_Newbie" added as an alias to "A New One".

Aug. 31, 2021, 9:40 a.m. Team "r3dact0r" added as an alias to "What-A-What".

Aug. 31, 2021, 9:40 a.m. Team "Nabu" added as an alias to "Ret2Cringe".

Aug. 31, 2021, 9:40 a.m. Team "Rocinante" added as an alias to "Fl4g Sm4sher".

Aug. 31, 2021, 9:38 a.m. Team "TCache_Money" added as an alias to "Tcache Money".

Aug. 31, 2021, 9:38 a.m. Team "JHack_Chirac" added as an alias to "J'Hack Chirac".