CTF Time

Name: HI Cyber Con 2026 CTF (an HI Cyber Con CTF event.)
Date: Oct. 30, 2026, 2 p.m. — 01 Nov. 2026, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.hiddeninvestigations.net/
Rating weight: 0
Event organizers: HiddenInvestigations

Name: CTF@AC26 - Finals (an CTF@AC event.)
Date: Oct. 30, 2026, 10 a.m. — 01 Nov. 2026, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Faculty of Automation & Computer Science, Timisoara, Romania
Offical URL: https://ctf.ac.upt.ro/
Rating weight: 25.00
Event organizers: UPT-CTF

Name: 2026 Qiangwang Challenge on Cyber Mimic Defense Qualification (an Qiangwang Challenge on Cyber Mimic Defense event.)
Date: Oct. 31, 2026, 2 a.m. — 01 Nov. 2026, 02:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://nest.pmlabs.com.cn/en/events/qiangwang-9/registration
Rating weight: 0
Event organizers: LoveFromMimic

Name: Russian CTF Cup X Qualifier (an Russian CTF Cup event.)
Date: Oct. 31, 2026, 9 a.m. — 01 Nov. 2026, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctfcup.ru/
Rating weight: 0.00
Event organizers: ctfcup

Name: StealthCup 2026 (an Stealth-Cup event.)
Date: Oct. 31, 2026, 1 p.m. — 31 Oct. 2026, 21:00 UTC  [add to calendar]
Format: Hack quest
On-site
Location: On-site, Quebec City, Canada (Hackfest, Quebec City Convention Centre). Remote participation only on request.
Offical URL: https://stealth.ait.ac.at/
Rating weight: 0.00
Event organizers: 0x01DA

Name: Hacker's Gambit 2026 (Round 2 – Grand Finale) (an Hacker's Gambit event.)
Date: Oct. 30, 2026, 6:30 a.m. — 31 Oct. 2026, 06:30 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Jaihind College of Engineering,At Post Kuran, Taluka Junnar, Pune - 410511, Maharashtra, India (19°09'47.2"N 73°54'52.2"E)
Offical URL: https://unstop.com/p/hackers-gambit-2026-jaihind-college-of-engineering-kuran-1723293
Rating weight: 0.00
Event organizers: JCOE Cyber Sentinels

Name: HAM-DEFCON (an HAM-DEFCON event.)
Date: Oct. 31, 2026, 3:30 a.m. — 31 Oct. 2026, 07:30 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: National Institute Of Technology Warangal, Hanamkonda, Telangana, India, 505004
Offical URL: http://defcon.hamarc.tech/
Rating weight: 0
Event organizers: HAMARC

Name: Srdnlen CTF 2026 Finals (Sardinia Cyber Camp) (an Srdnlen CTF event.)
Date: Oct. 29, 2026, 9 a.m. — 29 Oct. 2026, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Italy, Cagliari
Offical URL: https://ctf.srdnlen.it/
Rating weight: 25.00
Event organizers: Srdnlen

Name: Sudocrypt v16.0 (an Sudocrypt event.)
Date: Oct. 27, 2026, 3:30 a.m. — 28 Oct. 2026, 15:30 UTC  [add to calendar]
Format: Hack quest
On-line
Offical URL: https://sudocrypt.com/
Rating weight: 0.00
Event organizers: exunclan

Name: Hack.lu CTF 2026 (an Hack.lu CTF event.)
Date: Oct. 23, 2026, 6 p.m. — 25 Oct. 2026, 18:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://flu.xxx/
Rating weight: 94.74
Event organizers: FluxFingers

Name: cruXipher 2026 - ATMoS '26, BITS Hyderabad (an cruXipher event.)
Date: Oct. 23, 2026, 12:30 a.m. — 25 Oct. 2026, 00:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://cruxipher.crux-bphc.com/
Rating weight: 24.83
Event organizers: CRUx BPHC

Name: HITCON CTF 2026 (an HITCON CTF event.)
Date: Oct. 23, 2026, 2 p.m. — 25 Oct. 2026, 14:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf2026.hitcon.org/
Rating weight: 91.16
Event organizers: HITCON

Name: RSTCON 2026 CTF (an RSTCON CTF event.)
Date: Oct. 23, 2026, 5 p.m. — 25 Oct. 2026, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.rstcon.org/
Rating weight: 25.00
Event organizers: RSTCON

Name: Cryovault 2026 Finals (an ISFCR PESU CTF event.)
Date: Oct. 24, 2026, 3:30 a.m. — 25 Oct. 2026, 06:30 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Bengaluru, India
Offical URL: https://isfcrpesu.ctfd.io/
Rating weight: 0.00
Event organizers: x6e.x65.x78.x75.x73

Name: H7CTF 2026 Finals (an H7CTF event.)
Date: Oct. 24, 2026, 6:30 a.m. — 25 Oct. 2026, 06:30 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Chennai, Tamil Nadu
Offical URL: https://2026.h7tex.com/
Rating weight: 23.43
Event organizers: H7Tex

Name: BSides Peoria CTF 2026 (an BSides Peoria CTF event.)
Date: Oct. 24, 2026, 2:45 p.m. — 24 Oct. 2026, 20:45 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Peoria, Illinois, USA
Offical URL: https://bsidespeoriac.tf/
Rating weight: 0
Event organizers: BSides Peoria CTF Village

Name: CREST CTF 2.0 (an CREST CTF event.)
Date: Oct. 23, 2026, 5:30 a.m. — 23 Oct. 2026, 11:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://crest.ctf7.com/
Rating weight: 0
Event organizers: CREST

Name: SAS CTF 2026 Finals (an SAS CTF event.)
Date: Oct. 20, 2026, 3 a.m. — 20 Oct. 2026, 14:00 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Indonesia, Bali
Offical URL: https://ctf.thesascon.com/
Rating weight: 49.50
Event organizers: Drovosec SAS CREW

Name: Securinets CTF Quals 2026 (an Securinets CTF event.)
Date: Oct. 17, 2026, 9 a.m. — 18 Oct. 2026, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.securinets.tn/
Rating weight: 85.12
Event organizers: Securinets

Name: DEADFACE CTF 2026 (an DEADFACE CTF event.)
Date: Oct. 17, 2026, 2 p.m. — 19 Oct. 2026, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.deadface.io/
Rating weight: 35.39
Event organizers: Cyber Hacktics