CTF Time

Name: Season V, US Cyber Open Competitive CTF (an PlayCyber event.)
Date: June 9, 2025, 8 p.m. — 19 June 2025, 23:59 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://www.uscybergames.com/
Rating weight: 0
Event organizers: Play Cyber

Name: DHM 2025 (an DHM event.)
Date: June 18, 2025, 8 a.m. — 19 June 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Germany, Heilbronn
Offical URL: https://hacking-meisterschaft.de/
Rating weight: 25.00
Event organizers: NFITS

Name: SSMCTF 2025 (an SSMCTF event.)
Date: June 14, 2025, 9 a.m. — 15 June 2025, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ssmct.org/ctf
Rating weight: 0.00
Event organizers: D0wn13s

Name: Cyber Lumen x GWK #CTF1 (an Cyber Lumen #CTF event.)
Date: June 16, 2025, 11:49 a.m. — 16 June 2025, 11:49 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: South Korea, Seoul
Offical URL: https://www.fkca.eu/cyber-lumen-global-women-in-korea-ctf1/
Rating weight: 0
Event organizers: Cyber Lumen

Name: smileyCTF 2025 (an smileyCTF event.)
Date: June 14, 2025, midnight — 16 June 2025, 00:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://play.ctf.gg/
Rating weight: 48.61
Event organizers: .;,;.

Name: CyberSci Nationals 2025 (an CyberSci event.)
Date: June 14, 2025, 1 p.m. — 15 June 2025, 23:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Ottawa, Canada
Offical URL: https://cybersecuritychallenge.ca/
Rating weight: 0
Event organizers: 0xD13A

Name: Midnight Sun CTF 2025 Finals (an Midnight Sun CTF event.)
Date: June 14, 2025, 10 a.m. — 15 June 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Sweden, Stockholm
Offical URL: https://play.midnightsunctf.com/
Rating weight: 100.00
Event organizers: HackingForSoju

Name: Crypto CTF 2025 (an Crypto CTF event.)
Date: July 12, 2025, 6 a.m. — 13 July 2025, 06:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://cr.yp.toc.tf/
Rating weight: 88.25
Event organizers: ASIS

Name: AMSI CTF 2025 (an AMSI CTF event.)
Date: June 13, 2025, 8 p.m. — 14 June 2025, 18:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Paris
Offical URL: https://amsi-sorbonne.fr/
Rating weight: 0.00
Event organizers: AMSI CTF Team

Name: CyberGame 2025 (an CyberGame event.)
Date: April 1, 2025, midnight — 09 June 2025, 23:59 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://cybergame.sk/
Rating weight: 0
Event organizers: SK-CERT

Name: bi0sCTF 2025 (an bi0sCTF event.)
Date: June 7, 2025, 5:30 a.m. — 08 June 2025, 17:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.bi0s.in/
Rating weight: 95.79
Event organizers: bi0s

Name: Goldrush Gauntlet 2025 (an Goldrush Gauntlet event.)
Date: June 7, 2025, 1 p.m. — 08 June 2025, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: United States, Dahloenga
Offical URL: https://ggctf.cyberhawks.org/
Rating weight: 0.00
Event organizers: CyberHawks at UNG

Name: TJCTF 2025 (an TJCTF event.)
Date: June 6, 2025, noon — 08 June 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://tjctf.org/
Rating weight: 51.29
Event organizers: tjcsc

Name: DIVER OSINT CTF 2025 (an DIVER OSINT CTF event.)
Date: June 7, 2025, 3 a.m. — 08 June 2025, 03:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctfd.diverctf.org/
Rating weight: 0.00
Event organizers: diver_osint

Name: DFIR Labs CTF by The DFIR Report (an DFIR Labs CTF event.)
Date: June 7, 2025, 4:30 p.m. — 07 June 2025, 20:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://thedfirreport.com/services/dfir-labs/ctf/
Rating weight: 0
Event organizers: The DFIR Report

Name: MindBreak 2025 by ESGI (an MindBreak event.)
Date: June 6, 2025, 9 p.m. — 07 June 2025, 06:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Paris, France
Offical URL: https://linktr.ee/m1ndbr34k
Rating weight: 0.00
Event organizers: ESGI

Name: N0PSctf (an N0PSctf event.)
Date: May 31, 2025, 8 a.m. — 01 June 2025, 20:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.nops.re/
Rating weight: 24.34
Event organizers: NOPS

Name: [POSTPONED] Internet Festival 2025 CTF Quals (an VettoCon event.)
Date: May 31, 2025, 11 a.m. — 01 June 2025, 11:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ifctf.fibonhack.it/
Rating weight: 0.00
Event organizers: fibonhack

Name: Grey Cat The Flag 2025 (an Grey Cat The Flag event.)
Date: May 31, 2025, noon — 01 June 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctfd.nusgreyhats.org/
Rating weight: 32.92
Event organizers: NUSGreyhats

Name: Hardwear.io USA 2025 Hardware CTF (an Hardware CTF by Quarkslab event.)
Date: May 30, 2025, 5 p.m. — 31 May 2025, 20:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: US, Santa Clara
Offical URL: https://hwctf.quarkslab.com/
Rating weight: 0.00
Event organizers: Hardware CTF by Quarkslab