Location: Online

Description: Duration: Each CTF lasts 4 hours. SIEM Options: Choose between Splunk and Elastic for your SIEM tool. Communication: Join our DFIR Labs CTF Discord Server for support and real-time updates. Cases: You will receive access to 1 detailed intrusion cases 1 hour before the start of the CTF. Cases include network and endpoint logs as well as Sigma and YARA hits. Questions: Complete 20+ questions within the 4-hour timeframe. Access: All you need is a web browser. Support: Live support on Discord. Winners: Top 3 players will receive a discount on swag, as well as names in the CTF winners page.

Format: Jeopardy

Prizes: Top 3 players will receive discounted swag, as well as names in the CTF winners book. Top 5 players will have the opportunity to join The DFIR Report as a volunteer analyst!

Restrictions: Individual

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Location: Online

Description: The US Cyber Games program is hosting its Season V, US Cyber Open Competitive CTF. The Competitive CTF is for those ready to put their knowledge and skills to the test. Challenges will range from intermediate to advanced in difficulty, and all challenges will be delivered via CTF-d.

Format: Jeopardy

Prizes: Prizes will be awarded to the top finishers overall, as well as the top finisher within each category. 1st Place Overall: Applied Technology Academy Course + Certification Voucher, $250 gift card 2nd Place Overall: $350 gift card 3rd Place Overall: $250 gift card Category Winners (Crypto, Forensics, PWN, Reverse Engineering, Web): $100 gift card

Restrictions: Individual

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Location: Paris

Description: Welcome to the AMSI CTF 2025, a cybersecurity competition organized by the Association of Master Sécurité Informatique (AMSI) of Sorbonne Université. This exciting event brings together "la crème de la crème" of cybersecurity students to test their skills in a series of challenging security puzzles and scenarios. On June 13-14, participants will tackle various challenges across multiple categories including cryptography, web, reverse engineering, forensics, and more. Thanks to our sponsors : Orange Cyberdefense, Quakslab, Root-Me Pro, RedBull, and Aforp.

Format: Jeopardy

Prizes: ? 1ère place : 300 € + merch Root-Me Pro ? 2e place : 200 € + merch Root-Me Pro ? 3e place : 100 € + merch Root-Me Pro ✍️ + 50 € pour le meilleur write-up

Restrictions: Open

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Location: Online

Description: The first ever CTF hosted by .;,;. (also known as smiley), America's #1 CTF team*! *in 2024, according to CTFtime Join our Discord: https://discord.gg/agpgGW372M ## Categories: Cryptography, pwn, reverse engineering, web exploitation, blockchain, miscellaneous. ## Sponsors: OtterSec - osec.io Zellic - zellic.io Veria Labs - verialabs.com Infra sponsored by goo.gle/ctfsponsorship

Format: Jeopardy

Prizes: 1st - $1024 + qualification to MaltaCTF 2025 Finals in Valletta, Malta 2nd - $512 3rd - $256 4th - $128 $64 each for our favorite writeups Additional prizes TBA.

Restrictions: Open

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Location: Online

Description: Crypto CTF is an online competition for hackers to test, evaluate, and expand their skills in exploiting cryptography. In this CTF, we will provide various crypto challenges that focus on modern cryptography techniques. All crypto lovers are most welcome! Crypto CTF is a response to the longstanding complaints by CTF participants about the crypto challenges in CTF contests. In this brand-new tournament, we aim to provide crypto enthusiasts with fun and challenging pure crypto tasks that will truly test their passion for cryptography. Each task will be based on a specific cryptographic primitive or will involve a direct application of cryptography in other fields. The organizers of these tournaments generously offer their knowledge and skills to design original Crypto tasks and challenges for similar contests. Long Live Crypto :) Discord: https://discord.gg/RsvAJtF5Q5 Twitter: https://twitter.com/Crypto_CTF

Format: Jeopardy

Prizes: .:: To be announced ::.

Restrictions: Open

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Location: Sweden, Stockholm

Description: None

Format: Jeopardy

Prizes: None

Restrictions: Open

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Location: Ottawa, Canada

Description: CyberSci is Canada's national Cyber Security Challenge for university and college students. - Think you've got an elite team of students? Come and prove it. Our winners will go on to compete against the best in the world. - Just starting out? This is the best way to learn and rise to the top. - Annual in-person events since 2016. Over 500 students so far. We run the Canadian national finals in Ottawa in the summer. - The winning team from each CyberSci regional event is invited to attend the national finals. - An all-women’s team, an all-juniors team, and an all-Indigenous team are also invited. - The 4-day on-site event has a Jeopardy and a Defense competition. - Top teams from the nationals go on to represent Canada at international events.

Format: Jeopardy

Prizes: National winners will represent Canada at international events in 2025.

Restrictions: Open

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Location: Online

Description: The GPN CTF 2025 is this year’s CTF edition organized by KITCTF. Play online or in person at the GPN. This is a student run jeopardy-style CTF with challenges from the categories crypto, pwn, reversing, web and misc (including some more exotic ones). Featuring both a range of easy challenges from each category and a majority of hard challenges it will be a great CTF for beginners and experienced players alike. Communication channels: https://discord.gg/TxPA4ZVUnm Thank you to our sponsors for supporting the CTF! * Main & Writeup Sponsor: TBD * Prize Sponsor: TBD * Infrastructure Sponsor: TBD Learn more about our sponsors and opportunities they have: https://gpn23.ctf.kitctf.de/sponsors

Format: Jeopardy

Prizes: TBD

Restrictions: Open

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Location: Online

Description: IERAE CTF is the CTF organized by ierae, the CTF team of GMO Cybersecurity by Ierae, Inc. GMO Cybersecurity by Ierae, Inc. is a Japanese security company with many CTF players. We have been helped by and grown with those CTF players, and now we want to help energize the community.

Format: Jeopardy

Prizes: 1st Place 300,000 JPY 2nd Place 150,000 JPY 3rd Place 50,000 JPY ※ Amounts are pre-tax. Foreign recipients of the prize money are subject to source withholding tax rate of 20.42%. For Japanese teams consisting only of students, the top of which will receive: - 2 OffSec Training licenses - 2 CODE BLUE 2025 tickets Please make sure to select the correct option when registering account.

Restrictions: Open

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Location: Online

Description: MaltaCTF is an international cybersecurity event organized by Friendly Maltese Citizens. The CTF features online preliminary rounds throughout 2025, with finals taking place alongside the MaltaCTF Conference held on-site in Valletta, Malta. Site: https://2025.ctf.mt Discord: https://discord.gg/skM2YU8jC4 Proudly sponsored by: - Zellic - Ottersec Infra sponsored by goo.gle/ctfsponsorship

Format: Jeopardy

Prizes: Top 4 teams will be invited to MaltaCTF 2025 Finals, with partial flight reimbursements and fully paid accomodation.

Restrictions: Open

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Location: Online

Description: A CTF by a friendly team of farmers. Includes challenges of the following categories: - pwn - reverse - crypto - web - misc

Format: Jeopardy

Prizes: None

Restrictions: Open

Register 👉 here

Location: Online

Description: categories: web, pwn, crypto, reversing, misc

Format: Jeopardy

Prizes: 12,345 USD for the first place 5,432.1 USD for the second place 3,210 USD for the third place In addition, there will be another on-site event (at a later time) that the top teams will be invited to participate for additional prizes.

Restrictions: Open

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Location: Online

Description: Get ready for the inaugural BSides Mumbai Capture The Flag (CTF) 2025! This online Jeopardy-style CTF is open to everyone - from curious beginners to experienced ethical hackers. Whether you're sharpening your skills or just starting your journey, you'll find challenges tailored for all skill levels. Participants will compete across a wide range of categories, testing their creativity, technical expertise, and problem-solving abilities. Challenge Categories: Web Mobile (Android) Web3 Artificial Intelligence (AI) Cryptography Pwn Reverse Engineering Forensics Miscellaneous (Steganography, OSINT, Windows, Linux, Networking) Need assistance or have questions? Get in touch: ctf@bsidesmumbai.in Stay updated and connect with us: LinkedIn: https://in.linkedin.com/company/bsidesmumbai Whatsapp: https://chat.whatsapp.com/FOLa4NT7zHQ7AoDx4CgwEa Twitter: https://x.com/BSidesMumbai Facebook: https://www.facebook.com/bsidesmumbai Instagram: https://www.instagram.com/bsidesmumbai/ Discord: https://discord.gg/2KRGQWBGR3 Youtube: https://www.youtube.com/@BSidesMumbai

Format: Jeopardy

Prizes: To be announced

Restrictions: Open

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Location: Online

Description: R3CTF 2025 is a online jeopardy-style CTF organized by r3kapig. Categories: Pwn, Web, Crypto, Reverse, Blockchain, Misc. Forensics and etc.... Sponsors: Gold sponsors: OtterSec (https://osec.io/) && Offside Labs (https://offside.io/) (Listed in no particular order) Infra sponsored by goo.gle/ctfsponsorship Support channel -> https://discord.gg/zU64ekBsgA

Format: Jeopardy

Prizes: Prize: 1st $3500 2nd $2000 3rd: $500 blockchain blood prize: 1st 100 USDT 2nd 50 USDT 3rd 30 USDT

Restrictions: Open

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