CTF Time

Name: Alfa Surfing CTF (an Alfa CTF event.)
Date: Sept. 13, 2025, 9 a.m. — 14 Sept. 2025, 15:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://alfactf.ru/
Rating weight: 21.67
Event organizers: SPbCTF

Name: DefCamp Capture the Flag (D-CTF) 2025 Quals (an Defcamp CTF Qualification event.)
Date: Sept. 12, 2025, 10 a.m. — 14 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://dctf25-quals.cyber-edu.co/
Rating weight: 50.00
Event organizers: CCSIR.org

Name: FortID CTF 2025 (an TBTL CTF event.)
Date: Sept. 12, 2025, noon — 14 Sept. 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://fortid.ctfd.io/
Rating weight: 30.00
Event organizers: TBTL

Name: MaltaCTF 2025 Finals (an MaltaCTF event.)
Date: Sept. 13, 2025, 10 a.m. — 14 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Valletta, Malta
Offical URL: https://2025.ctf.mt/
Rating weight: 0.00
Event organizers: if this doesn't work we'll get more for next year

Name: WatCTF F25 (an WATCTF event.)
Date: Sept. 9, 2025, 7 p.m. — 11 Sept. 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://watctf.org/
Rating weight: 23.04
Event organizers: WATCTF

Name: BlackHat MEA CTF Qualification 2025 (an Blackhat MEA CTF event.)
Date: Sept. 7, 2025, 10 a.m. — 08 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://blackhatmea.com/capture-the-flag
Rating weight: 25.83
Event organizers: SAFCSP

Name: ImaginaryCTF 2025 (an ImaginaryCTF event.)
Date: Sept. 5, 2025, 7 p.m. — 07 Sept. 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.imaginaryctf.org/
Rating weight: 66.02
Event organizers: [sqrt (-1) + 1]

Name: CRACCON 2025 (an CRAC CTFs event.)
Date: Sept. 6, 2025, 8 a.m. — 07 Sept. 2025, 08:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://defhawk.com/battleground/raid/craccon-ctf-2025
Rating weight: 23.67
Event organizers: h4wk

Name: ASIS CTF Quals 2025 (an ASIS CTF Quals event.)
Date: Sept. 6, 2025, 2 p.m. — 07 Sept. 2025, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://asisctf.com/
Rating weight: 96.29
Event organizers: ASIS

Name: Nullcon Berlin HackIM 2025 CTF (an HackIM event.)
Date: Sept. 4, 2025, 10:30 a.m. — 05 Sept. 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: Berlin, Germany
Offical URL: https://ctf.nullcon.net/
Rating weight: 30.00
Event organizers: ENOFLAG

Name: corCTF 2025 (an corCTF event.)
Date: Aug. 30, 2025, midnight — 01 Sept. 2025, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.cor.team/
Rating weight: 82.00
Event organizers: Crusaders of Rust

Name: TFC CTF 2025 (an TFC CTF event.)
Date: Aug. 29, 2025, 10 a.m. — 31 Aug. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.thefewchosen.com/
Rating weight: 58.19
Event organizers: The Few Chosen

Name: Full Weak Engineer CTF 2025 (an Full Weak Engineer CTF event.)
Date: Aug. 29, 2025, 10 a.m. — 31 Aug. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.fwectf.com/
Rating weight: 24.61
Event organizers: full_weak_engineer

Name: Blue Arena (an Cyber Arena event.)
Date: Aug. 29, 2025, 2:04 p.m. — 31 Aug. 2025, 14:33 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: Online
Offical URL: https://csem.sturtles.in/events/2/
Rating weight: 0
Event organizers: Super_Hacker

Name: h4ckc0n 2025 (an h4ckc0n event.)
Date: Aug. 29, 2025, 3 p.m. — 30 Aug. 2025, 15:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://h4ckc0n.d4rkc0de.in/
Rating weight: 24.23
Event organizers: d4rkc0de

Name: NNS CTF 2025 (an NNS CTF event.)
Date: Aug. 29, 2025, 4 p.m. — 31 Aug. 2025, 16:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://nnsc.tf/
Rating weight: 25.00
Event organizers: Norske Nøkkelsnikere

Name: snakeCTF 2025 Quals (an snakeCTF event.)
Date: Aug. 29, 2025, 5 p.m. — 30 Aug. 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.snakectf.org/
Rating weight: 36.65
Event organizers: MadrHacks

Name: Lexington Informatics Tournament CTF 2025 (an LIT CTF event.)
Date: Aug. 23, 2025, 3 p.m. — 25 Aug. 2025, 15:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://lit.lhsmathcs.org/
Rating weight: 67.32
Event organizers: LIT CTF

Name: BrunnerCTF 2025 (an BrunnerCTF event.)
Date: Aug. 22, 2025, noon — 24 Aug. 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.brunnerne.dk/
Rating weight: 24.63
Event organizers: SDU

Name: HITCON CTF 2025 (an HITCON CTF event.)
Date: Aug. 22, 2025, 2 p.m. — 24 Aug. 2025, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf2025.hitcon.org/
Rating weight: 100.00
Event organizers: HITCON