NameDateFormatLocationWeightNotes
NorzhCTF 202121 May, 18:00 UTC — 23 May 2021, 18:00 UTCHack quest On-line 0.0086 teams will participate
NorthSec 202121 May, 23:30 UTC — 23 May 2021, 19:00 UTCHack quest On-line 24.007 teams will participate
Pwn2Win CTF 202128 May, 16:37 UTC — 30 May 2021, 16:37 UTCJeopardy On-line 83.4173 teams will participate
ICHSA CTF 202131 May, 18:00 UTC — 02 June 2021, 17:00 UTCJeopardy On-line 0.0020 teams will participate
Zh3r0 CTF V204 June, 10:30 UTC — 06 June 2021, 10:30 UTCJeopardy On-line 21.8529 teams will participate
S.H.E.L.L. CTF05 June, 06:30 UTC — 07 June 2021, 06:30 UTCJeopardy On-line 0.0014 teams will participate
BCACTF 2.011 June, 00:00 UTC — 14 June 2021, 00:00 UTCJeopardy On-line 0.000 teams will participate
Circle City Con CTF 202111 June, 16:00 UTC — 13 June 2021, 19:00 UTCJeopardy On-line 0.004 teams will participate
FAUST CTF 202112 June, 13:00 UTC — 12 June 2021, 22:00 UTCAttack-Defense On-line 100.0021 teams will participate
HSCTF 814 June, 12:00 UTC — 19 June 2021, 00:00 UTCJeopardy On-line 24.5032 teams will participate
The Threat Interceptors Challenge14 June, 15:00 UTC — 16 June 2021, 15:00 UTCJeopardy On-line 0.004 teams will participate
CTF InterIUT 202118 June, 20:00 UTC — 19 June 2021, 23:59 UTCJeopardy On-line 22.624 teams will participate
WeCTF 202119 June, 17:00 UTC — 20 June 2021, 17:00 UTCJeopardy On-line 25.0015 teams will participate
RuCTF 202120 June, 10:00 UTC — 20 June 2021, 19:00 UTCAttack-Defense On-line 0.0016 teams will participate
CTFZone 202126 June, 10:00 UTC — 26 June 2021, 20:00 UTCAttack-Defense On-line 0.004 teams will participate
Hack-A-Sat 2 Qualifiers26 June, 14:00 UTC — 27 June 2021, 20:00 UTCJeopardy On-line 25.003 teams will participate
0CTF/TCTF 2021 Quals 03 July, 02:00 UTC — 05 July 2021, 02:00 UTCJeopardy On-line 0.001 teams will participate
redpwnCTF 202109 July, 19:00 UTC — 12 July 2021, 19:00 UTCJeopardy On-line 32.6117 teams will participate
ENOWARS 510 July, 12:00 UTC — 11 July 2021, 22:00 UTCAttack-Defense On-line 44.339 teams will participate
Google Capture The Flag 202117 July, 00:00 UTC — 18 July 2021, 23:59 UTCJeopardy On-line 99.2274 teams will participate
CyBRICS CTF 202124 July, 10:00 UTC — 25 July 2021, 10:00 UTCJeopardy On-line 33.326 teams will participate
Crypto CTF 202130 July, 16:00 UTC — 31 July 2021, 16:00 UTCJeopardy On-line 36.0027 teams will participate
RaRCTF 202106 Aug., 17:00 UTC — 09 Aug. 2021, 17:00 UTCJeopardy On-line 0.000 teams will participate
TSG CTF 202107 Aug., 07:00 UTC — 08 Aug. 2021, 07:00 UTCJeopardy On-line 34.801 teams will participate
InCTF 202113 Aug., 13:30 UTC — 15 Aug. 2021, 13:30 UTCJeopardy On-line 70.410 teams will participate
Really Awesome CTF 202113 Aug., 19:00 UTC — 16 Aug. 2021, 19:00 UTCJeopardy On-line 23.495 teams will participate
corCTF 202121 Aug., 00:00 UTC — 23 Aug. 2021, 00:00 UTCJeopardy On-line 0.001 teams will participate
Midnight Sun CTF 2021 Finals27 Aug., 10:00 UTC — 28 Aug. 2021, 10:00 UTCJeopardy Stockholm, Sweden 52.9210 teams will participate
ALLES! CTF 202103 Sept., 16:00 UTC — 05 Sept. 2021, 16:00 UTCJeopardy On-line 36.3514 teams will participate
CSAW CTF Qualification Round 202110 Sept., 20:00 UTC — 12 Sept. 2021, 20:00 UTCJeopardy On-line 0.008 teams will participate
COMPFEST CTF 202112 Sept., 08:00 UTC — 13 Sept. 2021, 08:00 UTCJeopardy On-line 0.000 teams will participate
VolgaCTF 2021 Final16 Sept., 06:00 UTC — 16 Sept. 2021, 15:00 UTCAttack-Defense Samara, Russian Federation 37.502 teams will participate
Hack-A-Sat 2 Finals17 Sept., 22:00 UTC — 19 Sept. 2021, 22:00 UTCAttack-Defense On-line 0.001 teams will participate
DownUnderCTF24 Sept., 09:00 UTC — 26 Sept. 2021, 09:00 UTCJeopardy24.4415 teams will participate
0CTF/TCTF 2021 Finals25 Sept., 01:00 UTC — 26 Sept. 2021, 09:00 UTCJeopardy Shanghai, China 0.000 teams will participate
TastelessCTF 202101 Oct., 18:00 UTC — 03 Oct. 2021, 18:00 UTCJeopardy On-line 35.646 teams will participate
pbctf 202109 Oct., 00:00 UTC — 11 Oct. 2021, 00:00 UTCJeopardy On-line 24.900 teams will participate
iCTF15 Oct., 17:00 UTC — 16 Oct. 2021, 02:00 UTCAttack-Defense On-line 0.006 teams will participate
N1CTF 202116 Oct., 00:00 UTC — 18 Oct. 2021, 00:00 UTCJeopardy On-line 53.540 teams will participate
CyberSecurityRumble CTF05 Nov., 20:00 UTC — 07 Nov. 2021, 20:00 UTCJeopardy41.603 teams will participate
CSAW CTF Final Round 202112 Nov., 19:00 UTC — 14 Nov. 2021, 14:00 UTCJeopardy On-line 24.402 teams will participate
GrabCON24 Dec., 13:09 UTC — 24 Dec. 2021, 13:09 UTCJeopardy On-line 0.000 teams will participate