Name: Crypto CTF 2025
Date: 12 July, 06:00 UTC — 13 July 2025, 06:00 UTC
Format: Jeopardy
Location: On-line
Weight: 88.25
Notes: 139 teams will participate
More info: https://ctftime.org/event/2577
Date: 12 July, 06:00 UTC — 13 July 2025, 06:00 UTC
Format: Jeopardy
Location: On-line
Weight: 88.25
Notes: 139 teams will participate
More info: https://ctftime.org/event/2577
ctftime.org
Crypto CTF 2025
Crypto CTF is an online competition for hackers to test, evaluate, and expand their skills in exploiting cryptography...
Name: ToH CTF
Date: 19 July, 16:00 UTC — 20 July 2025, 16:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2833
Date: 19 July, 16:00 UTC — 20 July 2025, 16:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2833
ctftime.org
ToH CTF 2025
Welcome to ToH CTF 2025! We are Tower of Hanoi, a CTF team based in Milan, founded back in 2004. You might remember u...
Name: CTFZone 2025 Quals
Date: 16 Aug., 10:00 UTC — 17 Aug. 2025, 10:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2839
Date: 16 Aug., 10:00 UTC — 17 Aug. 2025, 10:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2839
ctftime.org
CTFZone 2025 Quals
BI.ZONE is ready to announce the date of CTFZone Quals 2025!
The first online stage will take place on August 16 at ...
The first online stage will take place on August 16 at ...
Name: BrunnerCTF 2025
Date: 22 Aug., 12:00 UTC — 24 Aug. 2025, 12:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2835
Date: 22 Aug., 12:00 UTC — 24 Aug. 2025, 12:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2835
ctftime.org
BrunnerCTF 2025
Get ready all cyber chefs and code connoisseurs, Brunnerne has cooked up their very first BrunnerCTF for all of you t...
Name: Sawah Cyber Security CTF 2025
Date: 23 Aug., 05:00 UTC — 23 Aug. 2025, 09:00 UTC
Format: Jeopardy
Location: Indonesia, Bali
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2824
Date: 23 Aug., 05:00 UTC — 23 Aug. 2025, 09:00 UTC
Format: Jeopardy
Location: Indonesia, Bali
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2824
ctftime.org
Sawah Cyber Security CTF 2025
We invite you to participate in an exciting 4-hours Capture The Flag (CTF) Hacking competition in the beautiful islan...
Name: TFC CTF 2025
Date: 29 Aug., 10:00 UTC — 31 Aug. 2025, 10:00 UTC
Format: Jeopardy
Location: On-line
Weight: 58.19
Notes: 0 teams will participate
More info: https://ctftime.org/event/2822
Date: 29 Aug., 10:00 UTC — 31 Aug. 2025, 10:00 UTC
Format: Jeopardy
Location: On-line
Weight: 58.19
Notes: 0 teams will participate
More info: https://ctftime.org/event/2822
ctftime.org
TFC CTF 2025
This year, The Few Chosen are thrilled to host our fifth annual Capture The Flag (CTF) event, set to take place from ...
Name: LINE CTF 2025
Date: 18 Oct., 00:00 UTC — 18 Oct. 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2819
Date: 18 Oct., 00:00 UTC — 18 Oct. 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2819
ctftime.org
LINE CTF 2025
LINE CTF 2025 is a one-day online jeopardy-style competition hosted by LY Corp's security team.
Name: Crate-CTF 2025
Date: 15 Nov., 13:00 UTC — 15 Nov. 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 25.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2838
Date: 15 Nov., 13:00 UTC — 15 Nov. 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 25.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2838
ctftime.org
Crate-CTF 2025
Crate-CTF is an annual Capture The Flag (CTF) competition organised by the Swedish Defence Research Agency in collabo...
Name: UIUCTF 2025
Date: 26 July, 00:00 UTC — 28 July 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 91.43
Notes: 43 teams will participate
More info: https://ctftime.org/event/2640
Date: 26 July, 00:00 UTC — 28 July 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 91.43
Notes: 43 teams will participate
More info: https://ctftime.org/event/2640
ctftime.org
UIUCTF 2025
UIUCTF is an annual capture-the-flag competition hosted by SIGPwny, the cybersecurity club at the University of Illin...
Name: CRMA mini CTF 2025
Date: 11 July, 17:00 UTC — 12 July 2025, 16:59 UTC
Format: Jeopardy
Location: On-line
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2847
Date: 11 July, 17:00 UTC — 12 July 2025, 16:59 UTC
Format: Jeopardy
Location: On-line
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2847
ctftime.org
CRMA mini CTF 2025
Welcome to the CRMA mini CTF 2025 — a 24-hour internal cybersecurity challenge exclusively. This event is designed to...
❤1
Name: StackSmash CTF
Date: 25 July, 13:00 UTC — 27 July 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 24.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2841
Date: 25 July, 13:00 UTC — 27 July 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 24.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2841
ctftime.org
StackSmash CTF
In the retro kingdom of SegFaultia, chaos has erupted. The dastardly Heap Hopper, a rogue programmer turned villain, ...
❤1
Name: CSD CTF 2025
Date: 08 Aug., 21:00 UTC — 10 Aug. 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2832
Date: 08 Aug., 21:00 UTC — 10 Aug. 2025, 21:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2832
ctftime.org
CSD CTF 2025
A weekend-long capture the flag (CTF) competition taking place from August 8 to 10, 2025, welcoming players of all sk...
❤1
Name: CDCTF 2025
Date: 20 Sept., 15:00 UTC — 21 Sept. 2025, 03:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2846
Date: 20 Sept., 15:00 UTC — 21 Sept. 2025, 03:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2846
ctftime.org
CDCTF 2025
Crimson Defense CTF 2025 will be held on Saturday, September 20th from 10am to 10pm CDT!
CDCTF is a virtual 12-hou...
CDCTF is a virtual 12-hou...
❤1
Name: AmateursCTF 2025
Date: 11 Oct., 00:00 UTC — 15 Oct. 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 36.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2844
Date: 11 Oct., 00:00 UTC — 15 Oct. 2025, 00:00 UTC
Format: Jeopardy
Location: On-line
Weight: 36.00
Notes: 0 teams will participate
More info: https://ctftime.org/event/2844
ctftime.org
AmateursCTF 2025
Third iteration of Amateurs CTF!
Join our discord for more details: discord.gg/gCX22asy65
Email: contact@amateu...
Join our discord for more details: discord.gg/gCX22asy65
Email: contact@amateu...
Name: Hack.lu CTF 2025
Date: 17 Oct., 18:00 UTC — 19 Oct. 2025, 18:00 UTC
Format: Jeopardy
Location: On-line
Weight: 98.02
Notes: 1 teams will participate
More info: https://ctftime.org/event/2842
Date: 17 Oct., 18:00 UTC — 19 Oct. 2025, 18:00 UTC
Format: Jeopardy
Location: On-line
Weight: 98.02
Notes: 1 teams will participate
More info: https://ctftime.org/event/2842
ctftime.org
Hack.lu CTF 2025
Hack.lu CTF is organized by FluxFingers, the CTF team of Ruhr-University Bochum (Germany). This will be the 15th edi...
Name: osu!gaming CTF 2025
Date: 25 Oct., 02:00 UTC — 27 Oct. 2025, 02:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 2 teams will participate
More info: https://ctftime.org/event/2801
Date: 25 Oct., 02:00 UTC — 27 Oct. 2025, 02:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 2 teams will participate
More info: https://ctftime.org/event/2801
ctftime.org
osu!gaming CTF 2025
Second edition of osu!gaming CTF :)
osu! (https://osu.ppy.sh/) is a fast-paced, precision-oriented rhythm game whe...
osu! (https://osu.ppy.sh/) is a fast-paced, precision-oriented rhythm game whe...
Name: N1CTF 2025
Date: 01 Nov., 12:00 UTC — 02 Nov. 2025, 12:00 UTC
Format: Jeopardy
Location: On-line
Weight: 94.50
Notes: 0 teams will participate
More info: https://ctftime.org/event/2795
Date: 01 Nov., 12:00 UTC — 02 Nov. 2025, 12:00 UTC
Format: Jeopardy
Location: On-line
Weight: 94.50
Notes: 0 teams will participate
More info: https://ctftime.org/event/2795
ctftime.org
N1CTF 2025
N1CTF is a jeopardy style CTF held by team Nu1L Team.
Name: BelkaCTF #7
Date: 25 July, 13:00 UTC — 27 July 2025, 13:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2858
Date: 25 July, 13:00 UTC — 27 July 2025, 13:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0
Notes: Individual
More info: https://ctftime.org/event/2858
ctftime.org
BelkaCTF #7
BelkaCTF is a digital forensics CTF held by Belkasoft, the vendor of Evidence Center X forensic toolkit.
Unravel a...
Unravel a...
Name: Startpwn CTF 2025
Date: 08 Aug., 16:00 UTC — 09 Aug. 2025, 19:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2855
Date: 08 Aug., 16:00 UTC — 09 Aug. 2025, 19:00 UTC
Format: Jeopardy
Location: On-line
Weight: 0.00
Notes: 1 teams will participate
More info: https://ctftime.org/event/2855
ctftime.org
Startpwn CTF 2025
STARPWN CTF 2025
A Capture the Flag competition at DEF CON 33 hosted by the Aerospace Village
Our goal is to br...
A Capture the Flag competition at DEF CON 33 hosted by the Aerospace Village
Our goal is to br...
Name: ImaginaryCTF 2025
Date: 05 Sept., 19:00 UTC — 07 Sept. 2025, 19:00 UTC
Format: Jeopardy
Location: On-line
Weight: 66.02
Notes: 58 teams will participate
More info: https://ctftime.org/event/2799
Date: 05 Sept., 19:00 UTC — 07 Sept. 2025, 19:00 UTC
Format: Jeopardy
Location: On-line
Weight: 66.02
Notes: 58 teams will participate
More info: https://ctftime.org/event/2799
ctftime.org
ImaginaryCTF 2025
ImaginaryCTF 2025 will now take place from September 5-7.
ImaginaryCTF 2025 is a cybersecurity CTF competition run...
ImaginaryCTF 2025 is a cybersecurity CTF competition run...