CTF Time

Name: Iran Tech Olympics Speed-Run CTF 2025 (an Iran Tech Olympics CTF event.)
Date: Oct. 28, 2025, 6:30 a.m. — 28 Oct. 2025, 06:30 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Tehran, Iran
Offical URL: https://ctf.olympics.tech/
Rating weight: 0
Event organizers: ASIS

Name: Iran Tech Olympics Attack-Defense 2025 (an Iran Tech Olympics CTF event.)
Date: Oct. 27, 2025, 6:30 a.m. — 27 Oct. 2025, 18:30 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Tehran, Iran
Offical URL: https://ctf.olympics.tech/
Rating weight: 25.00
Event organizers: ASIS

Name: osu!gaming CTF 2025 (an osu!gaming CTF event.)
Date: Oct. 25, 2025, 2 a.m. — 27 Oct. 2025, 02:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://osugaming.sekai.team/
Rating weight: 21.87
Event organizers: osu!gaming

Name: DEADFACE CTF 2025 (an DEADFACE CTF event.)
Date: Oct. 25, 2025, 2 p.m. — 27 Oct. 2025, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.deadface.io/
Rating weight: 35.23
Event organizers: Cyber Hacktics

Name: RSTCON 2025 CTF (an RSTCON CTF event.)
Date: Oct. 24, 2025, 7 p.m. — 26 Oct. 2025, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: Savannah, GA, USA
Offical URL: https://mctf.io/rstcon25
Rating weight: 24.00
Event organizers: RSTCON

Name: SAS CTF 2025 Finals (an SAS CTF event.)
Date: Oct. 26, 2025, 3 a.m. — 26 Oct. 2025, 14:00 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Khao Lak, Thailand
Offical URL: https://ctf.thesascon.com/
Rating weight: 25.00
Event organizers: Drovosec SAS CREW

Name: m0leCon CTF 2026 Teaser (an m0leCon CTF event.)
Date: Oct. 24, 2025, 5 p.m. — 25 Oct. 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.m0lecon.it/
Rating weight: 100.00
Event organizers: pwnthem0le

Name: 2025 Qiangwang Challenge on Cyber Mimic Defense Qualification (an Qiangwang Challenge on Cyber Mimic Defense event.)
Date: Oct. 25, 2025, 1 a.m. — 26 Oct. 2025, 01:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://nest.pmlabs.com.cn/#/internationalEliteChallenge
Rating weight: 0.00
Event organizers: LoveFromMimic

Name: ECW Online Qualifiers (an ECW event.)
Date: Oct. 8, 2025, noon — 22 Oct. 2025, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://challenge-ecw.eu/
Rating weight: 0
Event organizers: Astek Group

Name: QnQSec CTF 2025 (an QnQSec event.)
Date: Oct. 16, 2025, 6 p.m. — 19 Oct. 2025, 18:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.qnqsec.team/
Rating weight: 24.75
Event organizers: QnQSec

Name: Hack.lu CTF 2025 (an Hack.lu CTF event.)
Date: Oct. 17, 2025, 6 p.m. — 19 Oct. 2025, 18:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://flu.xxx/
Rating weight: 98.02
Event organizers: FluxFingers

Name: H7CTF 2025 (an H7CTF International event.)
Date: Oct. 18, 2025, 3:30 a.m. — 19 Oct. 2025, 15:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.h7tex.com/
Rating weight: 22.56
Event organizers: H7Tex

Name: Web Arena (an Cyber Arena event.)
Date: Oct. 18, 2025, 12:30 p.m. — 19 Oct. 2025, 12:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: Online
Offical URL: https://csem.sturtles.in/events/3/
Rating weight: 0
Event organizers: Super_Hacker

Name: OmniCTF - 2025 - Individuals (an OmniCTF event.)
Date: Oct. 18, 2025, 7 a.m. — 18 Oct. 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Romania, Constanța
Offical URL: https://omnictf.com/
Rating weight: 0
Event organizers: f4ckWind0s

Name: Hackfest CTF 2025 (an Hackfest CTF event.)
Date: Oct. 16, 2025, 7:30 p.m. — 17 Oct. 2025, 19:30 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Québec, QC, Canada
Offical URL: https://hfctf.ca/
Rating weight: 0.00
Event organizers: Hackfest.ca

Name: LINE CTF 2025 (an LINE CTF event.)
Date: Oct. 18, 2025, midnight — 19 Oct. 2025, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://linectf.me/
Rating weight: 66.50
Event organizers: LINE CTF

Name: HITCON Cyber Range 2025 Final (an HITCON Cyber Range event.)
Date: Oct. 17, 2025, 1 a.m. — 17 Oct. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Taipei, Taiwan
Offical URL: https://hitcon.kktix.cc/events/hitcon-cyberrange-2025
Rating weight: 0.00
Event organizers: HITCON

Name: DEF CON CTF 2025 (an DEF CON CTF event.)
Date: Aug. 8, 2025, 4 p.m. — 10 Aug. 2025, 19:00 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: United States, Las Vegas
Offical URL: https://nautilus.institute/
Rating weight: 100.00
Event organizers: Nautilus Institute

Name: POC CTF Qualification 2025 (an Power Of Community - POC CTF event.)
Date: Oct. 12, 2025, 10 a.m. — 13 Oct. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://powerofcommunity.net/2025/ctf.html
Rating weight: 0
Event organizers: SAFCSP

Name: EnigmaXplore 3.0 (an EnigmaXplore event.)
Date: Oct. 10, 2025, 12:30 p.m. — 11 Oct. 2025, 00:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://enigmaxplore.ctfd.io/
Rating weight: 24.58
Event organizers: Crispr_iiitn