| Name | Date | Format | Location | Weight | Notes |
|---|
| RaRCTF 2021 | 06 Aug., 17:00 UTC — 09 Aug. 2021, 17:00 UTC | Jeopardy |
On-line
| 0.00 | | 14 teams will participate
|
| TSG CTF 2021 | 07 Aug., 07:00 UTC — 08 Aug. 2021, 07:00 UTC | Jeopardy |
On-line
| 34.80 | | 15 teams will participate
|
| BSides Noida CTF | 07 Aug., 10:30 UTC — 08 Aug. 2021, 10:30 UTC | Jeopardy |
On-line
| 0.00 | | 21 teams will participate
|
| InCTF 2021 | 13 Aug., 13:30 UTC — 15 Aug. 2021, 13:30 UTC | Jeopardy |
On-line
| 70.41 | | 30 teams will participate
|
| Really Awesome CTF 2021 | 13 Aug., 19:00 UTC — 16 Aug. 2021, 19:00 UTC | Jeopardy |
On-line
| 23.49 | | 27 teams will participate
|
| Hacker's Playground 2021 | 16 Aug., 06:00 UTC — 17 Aug. 2021, 06:00 UTC | Jeopardy |
On-line
| 24.50 | | 23 teams will participate
|
| corCTF 2021 | 21 Aug., 00:00 UTC — 23 Aug. 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 4 teams will participate
|
| Midnight Sun CTF 2021 Finals | 27 Aug., 10:00 UTC — 28 Aug. 2021, 10:00 UTC | Jeopardy |
Stockholm, Sweden
| 52.92 | | 15 teams will participate
|
| WORMCON 0x01 | 28 Aug., 10:30 UTC — 29 Aug. 2021, 10:30 UTC | Jeopardy |
On-line
| 0.00 | | 2 teams will participate
|
| ALLES! CTF 2021 | 03 Sept., 16:00 UTC — 05 Sept. 2021, 16:00 UTC | Jeopardy |
On-line
| 36.35 | | 29 teams will participate
|
| GrabCON CTF 2021 | 04 Sept., 10:30 UTC — 05 Sept. 2021, 10:30 UTC | Jeopardy |
On-line
| 0.00 | | 4 teams will participate
|
| CSAW CTF Qualification Round 2021 | 10 Sept., 20:00 UTC — 12 Sept. 2021, 20:00 UTC | Jeopardy |
On-line
| 0.00 | | 29 teams will participate
|
| COMPFEST CTF 2021 | 12 Sept., 08:00 UTC — 13 Sept. 2021, 08:00 UTC | Jeopardy |
On-line
| 0.00 | | 2 teams will participate
|
| VolgaCTF 2021 Final | 16 Sept., 06:00 UTC — 16 Sept. 2021, 15:00 UTC | Attack-Defense |
Samara, Russian Federation
| 37.50 | | 4 teams will participate
|
| Hack-A-Sat 2 Finals | 17 Sept., 22:00 UTC — 19 Sept. 2021, 22:00 UTC | Attack-Defense |
On-line
| 0.00 | | 3 teams will participate
|
| Overflow To Fall | 17 Sept., 22:00 UTC — 19 Sept. 2021, 22:00 UTC | Jeopardy |
On-line
| 0.00 | | 1 teams will participate
|
| Trend Micro CTF 2021 - Raimund Genes Cup - Online Qualifier | 18 Sept., 04:00 UTC — 19 Sept. 2021, 04:00 UTC | Jeopardy |
On-line
| 10.33 | | 4 teams will participate
|
| DownUnderCTF | 24 Sept., 09:00 UTC — 26 Sept. 2021, 09:00 UTC | Jeopardy | | 24.44 | | 35 teams will participate
|
| 0CTF/TCTF 2021 Finals | 25 Sept., 01:00 UTC — 26 Sept. 2021, 09:00 UTC | Jeopardy |
Shanghai, China
| 86.71 | | 4 teams will participate
|
| TastelessCTF 2021 | 01 Oct., 18:00 UTC — 03 Oct. 2021, 18:00 UTC | Jeopardy |
On-line
| 35.64 | | 9 teams will participate
|
| pbctf 2021 | 09 Oct., 00:00 UTC — 11 Oct. 2021, 00:00 UTC | Jeopardy |
On-line
| 24.90 | | 4 teams will participate
|
| DamCTF 2021 | 09 Oct., 00:00 UTC — 11 Oct. 2021, 00:00 UTC | Jeopardy |
On-line
| 24.43 | | 0 teams will participate
|
| SPbCTF's Student CTF 2021 Quals | 10 Oct., 09:00 UTC — 10 Oct. 2021, 18:00 UTC | Jeopardy |
On-line
| 24.33 | | 4 teams will participate
|
| iCTF | 15 Oct., 17:00 UTC — 16 Oct. 2021, 02:00 UTC | Attack-Defense |
On-line
| 0.00 | | 10 teams will participate
|
| N1CTF 2021 | 16 Oct., 00:00 UTC — 18 Oct. 2021, 00:00 UTC | Jeopardy |
On-line
| 53.54 | | 7 teams will participate
|
| CyberSecurityRumble CTF | 05 Nov., 20:00 UTC — 07 Nov. 2021, 20:00 UTC | Jeopardy | | 41.60 | | 6 teams will participate
|
| CSAW CTF Final Round 2021 | 12 Nov., 19:00 UTC — 14 Nov. 2021, 14:00 UTC | Jeopardy |
On-line
| 24.40 | | 3 teams will participate
|
| SPbCTF's Student CTF 2021 Finals | 14 Nov., 09:00 UTC — 14 Nov. 2021, 18:00 UTC | Attack-Defense |
On-line
| 25.00 | Prequalified teams only | |
| Balsn CTF 2021 | 20 Nov., 02:00 UTC — 22 Nov. 2021, 02:00 UTC | Jeopardy |
On-line
| 37.00 | | 8 teams will participate
|
