| Name | Date | Format | Location | Weight | Notes |
|---|
| 0x41414141 CTF | 23 Jan., 17:00 UTC — 30 Jan. 2021, 17:00 UTC | Jeopardy |
On-line
| 0 | | 64 teams will participate
|
| Ashish Jha | 26 Jan., 00:00 UTC — 27 Jan. 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 31 teams will participate
|
| justCTF [*] 2020 | 30 Jan., 06:00 UTC — 31 Jan. 2021, 19:00 UTC | Jeopardy |
On-line
| 24.85 | | 139 teams will participate
|
| DiceCTF 2021 | 06 Feb., 00:00 UTC — 08 Feb. 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 30 teams will participate
|
| Union CTF 2021 | 19 Feb., 19:00 UTC — 21 Feb. 2021, 19:00 UTC | Jeopardy |
On-line
| 0.00 | | 5 teams will participate
|
| darkCON CTF | 20 Feb., 10:30 UTC — 21 Feb. 2021, 10:30 UTC | Jeopardy |
On-line
| 0.00 | | 4 teams will participate
|
| Aero CTF 2021 | 27 Feb., 09:00 UTC — 28 Feb. 2021, 09:00 UTC | Jeopardy |
On-line
| 35.17 | | 23 teams will participate
|
| UTCTF 2021 | 13 March, 00:00 UTC — 15 March 2021, 00:00 UTC | Jeopardy |
On-line
| 34.11 | | 15 teams will participate
|
| SPRUSH CTF Quals 2021 | 21 March, 07:00 UTC — 21 March 2021, 21:00 UTC | Jeopardy |
On-line
| 0.00 | | 3 teams will participate
|
| VolgaCTF 2021 Qualifier | 27 March, 14:00 UTC — 28 March 2021, 14:00 UTC | Jeopardy |
On-line
| 32.73 | | 8 teams will participate
|
| Shakti CTF | 03 April, 06:30 UTC — 04 April 2021, 18:30 UTC | Jeopardy |
On-line
| 25.00 | | 0 teams will participate
|
| Midnight Sun CTF 2021 Quals | 09 April, 17:00 UTC — 10 April 2021, 17:00 UTC | Jeopardy |
On-line
| 50.32 | | 9 teams will participate
|
| PlaidCTF 2021 | 16 April, 21:00 UTC — 18 April 2021, 21:00 UTC | Jeopardy |
On-line
| 99.64 | | 11 teams will participate
|
| WPICTF 2021 | 23 April, 22:00 UTC — 25 April 2021, 22:00 UTC | Jeopardy |
On-line
| 36.40 | | 3 teams will participate
|
| DEF CON CTF Qualifier 2021 | 01 May, 00:00 UTC — 03 May 2021, 00:00 UTC | Jeopardy |
On-line
| 80.92 | | 8 teams will participate
|
| San Diego CTF 2021 | 08 May, 00:00 UTC — 10 May 2021, 00:00 UTC | Jeopardy |
On-line
| 0.00 | | 3 teams will participate
|
| saarCTF 2021 | 08 May, 13:00 UTC — 08 May 2021, 22:00 UTC | Attack-Defense |
On-line
| 24.42 | | 2 teams will participate
|
| Pwn2Win CTF 2021 | 28 May, 16:37 UTC — 30 May 2021, 16:37 UTC | Jeopardy |
On-line
| 83.41 | | 3 teams will participate
|
| WeCTF 2021 | 19 June, 17:00 UTC — 20 June 2021, 17:00 UTC | Jeopardy |
On-line
| 25.00 | | 1 teams will participate
|
