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CTFs

  • SECCON CTF

    Official URL
    Total events: 18
    Avg weight: 39.79

  • UCSB iCTF

    no logo

    Official URL
    Total events: 16
    Avg weight: 46.30

    The UCSB International Capture The Flag (also known as the iCTF) is a distributed, wide-area security exercise, whose goal is to test the security skills of the participants....

  • Insomni'hack

    Official URL
    Total events: 16
    Avg weight: 38.00

  • 0CTF

    Official URL
    Total events: 14
    Avg weight: 72.79

    Open for everyone. Hope all of you can enjoy it:)

  • Trend Micro CTF - Raimund Genes Cup

    Official URL
    Total events: 14
    Avg weight: 22.42

    Trend Micro CTF - Raimund Genes Cup is a capture the flag competition hosted by Trend Micro, a global leader in cybersecurity with a mission to make the world safe for exchan...

  • RuCTF Finals

    Official URL
    Total events: 13
    Avg weight: 31.43

    RuCTF is annual open all-Russian intercollegiate competition and conference on information security.
    On-site finals of RuCTF (https://ctftime.org/ctf/6) in Yekaterinburg...

  • DEF CON CTF Qualifier

    Official URL
    Total events: 12
    Avg weight: 81.14

    Online qualifier for the Vegas finals.

    Binjitsu by ddtek (... — 2012)
    Legitimate Business Syndicate (2013 — 2017)<...

  • DEF CON CTF

    Official URL
    Total events: 12
    Avg weight: 82.60

    Vegas finals.

    Binjitsu by ddtek (... — 2012)
    Legitimate Business Syndicate (2013 — 2017)

  • RuCTF

    Official URL
    Total events: 12
    Avg weight: 74.30

    International online challenge in information security. Previously known as RuCTFE.

    Good choice to start playing A/D, because we're providing vulnbox in our cloud, s...

  • PlaidCTF

    Official URL
    Total events: 12
    Avg weight: 89.17

    Plaid CTF :: Hosted by Plaid Parliament of Pwning

  • CSAW CTF Qualification Round

    Official URL
    Total events: 12
    Avg weight: 36.92

    CSAW CTF is a entry-level CTF, designed for undergraduate students who are trying to break into security. Challenges are specifically designed to point students in directions...

  • HITCON CTF

    Official URL
    Total events: 12
    Avg weight: 67.30

  • Dragon CTF

    Total events: 12
    Avg weight: 55.20

  • Hack.lu CTF

    Official URL
    Total events: 11
    Avg weight: 75.70

  • CSAW CTF Final Round

    Official URL
    Total events: 11
    Avg weight: 29.03

    This one is harder. :)

  • VolgaCTF Qualifier

    Official URL
    Total events: 11
    Avg weight: 23.98

    VolgaCTF is an international inter-university cybersecurity competition organised by a group of IT enthusiasts based in Samara, Russia.

    The competition consists of 2 ...

  • Securinets CTF

    Official URL
    Total events: 11
    Avg weight: 31.91

    CTF Securinets Quals 2015 is an on-line jeopardy style CTF organized by Tunisian student.
    You can find more details on our website: https://ctfsecurinets.tech/

  • Codegate CTF Preliminary

    Official URL
    Total events: 10
    Avg weight: 46.54

  • HackIM

    Official URL
    Total events: 10
    Avg weight: 22.35

  • ASIS CTF Quals

    Official URL
    Total events: 10
    Avg weight: 51.13

    ASIS CTF Quals

  • Google Capture The Flag

    Official URL
    Total events: 10
    Avg weight: 63.64

    Annual Capture The Flag hosted by the Google Security Team.

  • Midnight Sun CTF

    Official URL
    Total events: 10
    Avg weight: 40.86

    Midnight Sun CTF is HackingForSoju's annual CTF event to promote competition around the world.

    The final event is in June (15th-16th) in Stockholm, Sweden, with the ...

  • Codegate CTF Finals

    Official URL
    Total events: 9
    Avg weight: 59.17

  • HITB CTF Amsterdam

    Official URL
    Total events: 9
    Avg weight: 29.17

    What: Jeopardy style CTF hacking competition
    When: April 12th & 13th 2018
    Where: On site at HITB2018AMS @ NH Krasnapolsky
    Who: Max of 24 teams with up to 3 pla...

  • C3CTF

    Official URL
    Total events: 9
    Avg weight: 67.86

  • ASIS CTF Finals

    Official URL
    Total events: 9
    Avg weight: 60.01

    ASIS CTF Finals

  • Defcamp CTF Qualification

    Official URL
    Total events: 9
    Avg weight: 21.60

  • Nuit du Hack CTF Quals

    Official URL
    Total events: 8
    Avg weight: 41.19

  • NorthSec CTF

    Official URL
    Total events: 8
    Avg weight: 30.38

    NorthSec is the world's biggest on-site CTF, opposes 75 teams of 8 people trying to obtain the most points by capturing flags during an intense 48 hour-long competition (Fri-...

  • backdoorCTF

    Official URL
    Total events: 8
    Avg weight: 33.69

    BackdoorCTF is an online jeopardy style event.

    Discord invite for the competition is https://discord.gg/skN4Mj, Communication at other times can be made through https...

  • VolgaCTF Final

    Official URL
    Total events: 8
    Avg weight: 26.78

    VolgaCTF is an international inter-university cybersecurity competition organised by a group of IT enthusiasts based in Samara, Russia.

    The competition consists of 2 ...

  • UConn CyberSEED

    no logo

    Official URL
    Total events: 8
    Avg weight: 5.00

  • WhiteHat Grand Prix

    Official URL
    Total events: 8
    Avg weight: 18.48

    WhiteHat Grand Prix, a Capture The Flag competition, is held annually by WhiteHatVN.com, leading cyber security forum in Vietnam.

  • ISITDTU CTF

    Official URL
    Total events: 8
    Avg weight: 25.42

  • JustHacking

    Official URL
    Total events: 8
    Avg weight: 26.58

  • Hack The Box CTF

    Official URL
    Total events: 8
    Avg weight: 26.29

    Hack The Box CTF's

  • bi0sCTF

    Official URL
    Total events: 7
    Avg weight: 48.23

    bi0sCTF is brought to you by CTF team bi0s of Amrita Viswa Vidyapeetham, Amritapuri.

  • GreHack CTF

    Official URL
    Total events: 7
    Avg weight: 24.25

    GreHack CTF is onsite jeopardy style CTF held each year at the occasion of GreHack Conference.

  • ångstromCTF

    Official URL
    Total events: 7
    Avg weight: 50.56

    Geared primarily towards high school students but with a very wide range of challenge difficulty.

  • FAUST CTF

    no logo

    Official URL
    Total events: 7
    Avg weight: 55.39

    FAUST CTF is an online attack-defense CTF organized by FAUST, the CTF team of Friedrich-Alexander University Erlangen-Nürnberg

  • hxp CTF

    Official URL
    Total events: 7
    Avg weight: 63.86

    A yearly(?) CTF organized by hxp.

    See CTF archive: https://ctf.hxp.io/

  • RCTF

    Official URL
    Total events: 7
    Avg weight: 45.04

  • Sunshine CTF

    Official URL
    Total events: 7
    Avg weight: 20.32

  • CTFZone

    Official URL
    Total events: 7
    Avg weight: 47.67

    Make CTF great again.

  • m0leCon CTF

    no logo

    Official URL
    Total events: 7
    Avg weight: 32.71

    m0leCon CTF is a jeopardy-style CTF that takes place during the m0leCon conference at the Politecnico di Torino. In 2022 there will be an online teaser CTF on the 13-14 of Ma...

  • PHD CTF Finals

    Official URL
    Total events: 6
    Avg weight: 46.00

    All tasks are available here: http://ctfarchive.phdays.com/

  • Nuit du Hack CTF Finals

    Official URL
    Total events: 6
    Avg weight: 22.44

  • Ghost in the Shellcode

    Official URL
    Total events: 6
    Avg weight: 65.00

  • Hackcon

    Official URL
    Total events: 6
    Avg weight: 18.46

    HackCon is a jeopardy style competition that includes challenges in the domain of Reverse Engineering, Web Exploitation, Clever Scripting, Automation and general "hacks".

    ...

  • picoCTF

    Official URL
    Total events: 6
    Avg weight: 0.00

    Highly recommended as anyone's first CTF, picoCTF is a traditional challenge-based competition with a two-week annual competition period that rolls into a year-round accessib...

  • Defcamp CTF Finals

    Official URL
    Total events: 6
    Avg weight: 20.40

  • UIUCTF

    Official URL
    Total events: 6
    Avg weight: 22.80

    CTF hosted by the Special interest Group for Computer
    Security (SIGPwny) at the University of Illinois in Urbana-Champaign.

  • Pragyan CTF

    no logo

    Official URL
    Total events: 6
    Avg weight: 17.31

  • TokyoWesterns/MMA CTF

    Total events: 6
    Avg weight: 78.06

  • Pwn2Win CTF

    Official URL
    Total events: 6
    Avg weight: 56.43

    Brazilian Thematic CTF, organized by Epic Leet Team members.

    Most original and multidisciplinary competition in the world!

  • HSCTF

    Official URL
    Total events: 6
    Avg weight: 26.63

    The first ever CTF run entirely by high schoolers!

    Infra sponsored by goo.gle/ctfsponsorship!

  • TAMUctf

    Official URL
    Total events: 6
    Avg weight: 32.03

    CTF organized by the Texas A&M Cybersecurity center

  • CyberSecurityRumble CTF

    Official URL
    Total events: 6
    Avg weight: 35.51

    The CSR will be back in 2021.

    Again we'll have fun tasks and awesome prices.

    Details will follow.

  • M*CTF

    Official URL
    Total events: 6
    Avg weight: 15.50

  • RITSEC CTF

    Total events: 6
    Avg weight: 25.80

  • Real World CTF

    Official URL
    Total events: 6
    Avg weight: 43.43

    The Real World CTF 2018, which is in jeopardy style, has an
    on-line qualification round followed by an on-site, hands-on
    final round in China where all challenges a...

  • X-MAS CTF

    Official URL
    Total events: 6
    Avg weight: 24.24

    X-MAS CTF is the competition organized by HTsP with the purpose of learning and having fun while solving jeopardy-style challenges.

    We welcome both beginners and expe...

  • Hackfest CTF

    Official URL
    Total events: 6
    Avg weight: 25.00

    The Hackfest CTF is a (currently remote, usually on-site) event that offers multiple CTFs in one night, ranging various levels of difficulty.
    - 400+ players
    - Over...

  • SECUINSIDE CTF Quals

    Official URL
    Total events: 5
    Avg weight: 47.35

  • Boston Key Party CTF

    Official URL
    Total events: 5
    Avg weight: 60.01

    a yearly ctf put on by a small group of friends

  • BSIDES CTF

    no logo

    Official URL
    Total events: 5
    Avg weight: 27.38

  • Sharif University CTF

    Official URL
    Total events: 5
    Avg weight: 25.70

  • Break In

    no logo

    Official URL
    Total events: 5
    Avg weight: 10.70

  • OpenCTF

    Official URL
    Total events: 5
    Avg weight: 19.67

    DEF CON OpenCTF! Now with a feline touch.

    2019-? Neg9 https://ctftime.org/team/303
    2014?-2018 v& https://ctftime.org/team/359

  • Hack Zone Tunisia

    no logo

    Total events: 5
    Avg weight: 28.54

  • STEM CTF

    Official URL
    Total events: 5
    Avg weight: 23.32

    In support of STEM outreach, MITRE hosts an annual Capture the Flag (CTF) competition. High school and undergraduate college students have the opportunity to compete in cyber...

  • AltayCTF

    Official URL
    Total events: 5
    Avg weight: 0.00

    CTF from the Altai region

  • EKOPARTY CTF

    Official URL
    Total events: 5
    Avg weight: 47.88

  • TJCTF

    no logo

    Official URL
    Total events: 5
    Avg weight: 23.82

  • OmCTF

    Official URL
    Total events: 5
    Avg weight: 0.00

  • InnoCTF

    Official URL
    Total events: 5
    Avg weight: 0.00

  • WhiteHat Challenge

    Official URL
    Total events: 5
    Avg weight: 0.00

    WhiteHat Challenge is a CTF contest held periodically by WhietHat.vn for beginners in learning or researching cybersecurity as system admins, students in technical schools, e...

  • CyberTalents CTFs

    Official URL
    Total events: 5
    Avg weight: 25.00

    CyberTalents is a platform that ranks cyber security professionals across the globe by running CTF competitions


  • Square CTF

    Official URL
    Total events: 5
    Avg weight: 30.41

    Annual CTF organized by Square. Puzzles range from easy (welcome new comers!) to hard.

  • CONFidence CTF

    Official URL
    Total events: 5
    Avg weight: 33.65

  • BSidesSF CTF

    no logo

    Official URL
    Total events: 5
    Avg weight: 24.47

    This is the CTF for the BSidesSF conference. Challenges available online or in-person. Most challenges will be introductory to medium difficulty. Prizes sponsored by Facebook...

  • RundergroundCTF

    Official URL
    Total events: 5
    Avg weight: 23.82

    Attack-Defence CTF by C4T BuT S4D team.

  • Space Security Challenge

    Official URL
    Total events: 5
    Avg weight: 19.48

    The US Air Force, along with the Defense Digital Service, is challenging hackers from around the world to focus their skills and creativity to help achieve more secure operat...

  • Securebug.se CTF

    Official URL
    Total events: 5
    Avg weight: 21.25

    SecureBug is organizing another CTF.
    Enjoy with your friends solving a number of challenges in different categories varying from basic to hard level.
    This CTF is f...

  • Metared CTF International

    Official URL
    Total events: 5
    Avg weight: 23.58

    Academic
    5 stages CTF Championship

    Awards ceremony / Ceremonia de premiación: February 23rd, 2022

    The invitation will be sent to all participants in Febr...

  • PHD CTF Quals

    Official URL
    Total events: 4
    Avg weight: 46.15

    All tasks are available here: http://ctfarchive.phdays.com/

  • ENOWARS

    Official URL
    Total events: 4
    Avg weight: 45.52

    Fun Attack/Defense Competitions

  • Hackfest

    Official URL
    Total events: 4
    Avg weight: 12.50

    Hackfest is a 2 day conference from 8am to 18pm and a 2 hacking games nights from 19pm to 3am, in Quebec, Canada. See games descriptions here
    http://www.hackfest.ca/en/...

  • BCTF

    no logo

    Official URL
    Total events: 4
    Avg weight: 28.33

    BCTF 2014 is a national contest in China.
    From the year 2015, BCTF will be opened to all participants around the world.

  • School CTF

    Official URL
    Total events: 4
    Avg weight: 25.00

    School CTF is a CTF competitions organized by SiBears team annually since 2010. This is a task-based (jeopardy style) CTF that only lasts for 5 hours, so we meet the constrai...

  • WhiteHat Contest

    Official URL
    Total events: 4
    Avg weight: 20.19

    WhiteHat Contest, a Capture The Flag contest, is held periodically by WhiteHat.vn, leading cyber security forum in Vietnam. WhiteHat Contest 11th will be the first Contest to...

  • QCTF

    Official URL
    Total events: 4
    Avg weight: 5.00

    On-site CTF for beginners, hosted by schools and universities around Russia and other CIS countries.

  • ctf.moscow

    Official URL
    Total events: 4
    Avg weight: 30.25

    Former Russian Cybersecurity Competition

  • Codefest CTF

    Official URL
    Total events: 4
    Avg weight: 20.56

    Codefest presents Capture the Flag, inviting all hackers to show off their skills on a global platform. It provides students with an opportunity to tackle computer security p...

  • TU CTF

    Official URL
    Total events: 4
    Avg weight: 24.57

  • Security Fest

    Official URL
    Total events: 4
    Avg weight: 39.36

    Security Fest is an annual IT-security conference in Gothenburg, Sweden.

    We're happy to have the great guys and gals at SecureLink as our premium sponsor. Awesome!

  • THCon CTF

    Official URL
    Total events: 4
    Avg weight: 21.50

    The Toulouse Hacking Convention is a french cybersecurity event, that brings together more than 350 participants each year, from various backgrounds : students, professionals...

  • BITSCTF

    Official URL
    Total events: 4
    Avg weight: 19.41

    A CTF conducted by BITSkrieg and Quark for the annual technical fest of BITS Goa. (Total Prize Pool: 20,000 INR)

  • NeverLAN CTF

    Official URL
    Total events: 4
    Avg weight: 12.37

    A Middle School focused CTF event.
    Everyone is welcome to come join in the fun, but Middle School / Jr. High students will be scored separately for prizes.
    Go to o...

  • N1CTF

    Official URL
    Total events: 4
    Avg weight: 47.91

    N1CTF is a jeopardy style CTF held by team Nu1L.

  • CODE BLUE CTF

    no logo

    Official URL
    Total events: 4
    Avg weight: 23.31

    In modern times the Internet is the vital of our society, which inevitably brings about cyber crimes, increasing in number and quantity. In late years the importance of infor...

  • HSE CTF

    Official URL
    Total events: 4
    Avg weight: 28.92

    On-site prequalified All-Russian students and schoolchildren CTF organized by HSE CTF team. VK: vk.com/hsectf TG: t.me/hsectf

  • ph0wn

    Official URL
    Total events: 4
    Avg weight: 25.00

    Ph0wn is a jeopardy style CTF dedicated to smart devices (IoT, embedded systems, smart phones…). Example: challenges on connected weather station, IP webcams, smart phones et...

  • CTF Russian Cup

    Official URL
    Total events: 4
    Avg weight: 0.00

    CTF Russian Cup is an annual wide CTF tournament between the winners of russian regional CTF-competitions.

  • b00t2root

    Official URL
    Total events: 4
    Avg weight: 21.88

    Hola hackers! Team NullKrypt3rs from IIITA is excited to announce b00t2root '20. A jeopardy style team CTF for the awesome infosec community .
    Get ready for some excitin...

  • UTCTF

    Official URL
    Total events: 4
    Avg weight: 34.28

    Online, jeopardy-style CTF run by the Information & Systems Security Society at the University of Texas at Austin. Free to play, with prizes offered to University teams. Open...

  • WPICTF

    Official URL
    Total events: 4
    Avg weight: 28.95

    WPICTF, hosted by Worcester Polytechnic Institute Cyber Security Club.

  • *ctf

    Official URL
    Total events: 4
    Avg weight: 30.13

  • Aero CTF

    Official URL
    Total events: 4
    Avg weight: 36.80

    https://twitter.com/AeroCTF

    https://discord.gg/gEVbRFh8py

  • b01lers CTF

    Official URL
    Total events: 4
    Avg weight: 28.84

    CTF Name: b01lers CTF
    Event Logo: Attached
    Start Time: 00:00 UTC March 14
    End Time: 00:00 UTC March 16
    Official Site URL: ctf.b01lers.com
    Event Forma...

  • Crypto CTF

    Official URL
    Total events: 4
    Avg weight: 36.08

    Crypto CTF is an online competition for hackers to test, evaluate, and expand their cryptography exploiting skills. In this CTF we will provide various crypto challenges rega...

  • CyBRICS CTF

    Official URL
    Total events: 4
    Avg weight: 31.58

    CyBRICS is a cross-university effort to bring students in BRICS countries into practical computer security through CTFs

  • ALLES! CTF

    Official URL
    Total events: 4
    Avg weight: 36.55

    Hi CTFers,

    ALLES! is looking forward to host their second CTF which will be held during the first weekend of September 2020. This Jeopardy style CTF is open to everyo...

  • WMCTF

    Official URL
    Total events: 4
    Avg weight: 25.00

    WMCTF is a jeopardy style CTF held by team W&M.

  • HackPack CTF

    Official URL
    Total events: 4
    Avg weight: 34.31

    HackPack CTF is a security competition that is part of two security courses at NCSU: CSC-405 Computer Security and CSC-591 Systems Attacks and Defenses. The target audience i...

  • Ugra CTF

    Official URL
    Total events: 4
    Avg weight: 27.46

    Ugra CTF is an open academic information security competition for beginners.

    This CTF is organized by [team Team] in a joint effort with Ugra Research Institute of In...

  • Cyber Grabs CTF

    Official URL
    Total events: 4
    Avg weight: 22.73

  • CyberTalents CTF

    Official URL
    Total events: 4
    Avg weight: 0.00

    Cyber Talents is a platform that ranks cyber security talents according to their real hands
    on skills in different cyber security categories by running capture the flag ...

  • SPbCTF's Student CTF

    Official URL
    Total events: 4
    Avg weight: 32.92

    Student CTF is a novice-level Capture The Flag organized by SPbCTF and supported by St. Petersburg Committee for Science and Higher Education.

    Free-to-play track is ...

  • RuCTF Quals

    Official URL
    Total events: 3
    Avg weight: 53.33

    DEPRECATED :)
    Qualifying event for RuCTF is RuCTFE now

  • rwthCTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 60.00

  • Power of XX

    Official URL
    Total events: 3
    Avg weight: 0.00

    - About

    Power of XX is a hacking contest CTF for WOMEN Only. It is held as an event at hacking & security conference POC (http://powerofcommunity.net) since 2011. It'...

  • SECUINSIDE CTF Finals

    Official URL
    Total events: 3
    Avg weight: 60.00

  • MalCon CTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 5.00

  • PoliCTF

    Official URL
    Total events: 3
    Avg weight: 31.10

    PoliCTF is an online jeopardy-style capture-the-flag competition, open to participants from all over the world.

  • CSCAMP CTF Quals

    Official URL
    Total events: 3
    Avg weight: 6.67

  • No cON Name CTF Finals

    no logo

    Official URL
    Total events: 3
    Avg weight: 7.50

  • Hackover CTF

    Official URL
    Total events: 3
    Avg weight: 17.72

    Who
    The CTF is run by the Hamburg local chapter of the Chaos Computer Club during the Hackover event.

    IRC
    #hackover-ctf on irc.hackint.org:6697 (TLS only!)....

  • Carthage Cyber Arena

    Official URL
    Total events: 3
    Avg weight: 25.00

    The great battle of Carthage title

  • BlazeCTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 26.60

    Signup and play at: http://ctf.420blaze.in

    Chat at:
    #hackerswhoblaze on freenode or https://blazeit.stamplayapp.com/

    Video stream: http://420blaze.tv/

  • PACTF

    Official URL
    Total events: 3
    Avg weight: 0.00

    PACTF is a global cybersecurity competition for high-school students. See https://en.wikipedia.org/wiki/PACTF.

  • H4ckIT CTF

    Official URL
    Total events: 3
    Avg weight: 18.63

  • M*CTF online

    Official URL
    Total events: 3
    Avg weight: 19.58

  • INS'hAck

    no logo

    Official URL
    Total events: 3
    Avg weight: 31.66

  • MeePwn CTF

    Official URL
    Total events: 3
    Avg weight: 27.45

    MeePwn CTF is an online competition designed for everyone who interested in cybersecurity. It is organized by MeePwn Team, a Team of security researchers and CTF players from...

  • SEC-T CTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 31.98

    SEC-T is non-profit annual IT security conference held in Stockholm, Sweden. This time we celebrate 10 years. We celebrate this with a retro-CTF. The date is Wednesday 13/9 1...

  • Security Case Study

    no logo

    Official URL
    Total events: 3
    Avg weight: 11.00

  • Kaspersky Industrial CTF Finals

    Official URL
    Total events: 3
    Avg weight: 19.81

    Kaspersky Industrial CTF Finals will be held at SAS conference (https://sas.kaspersky.com) in Singapore 8-9 April, 2019. Teams qualified to the finals based on quals:
    1....

  • EvlzCTF

    Official URL
    Total events: 3
    Avg weight: 21.36

    Be the Devil in a quest of questions. Ride in the nightmares of all programmers, and steal the points from right under their buggy noses. The CTF for all the evil geniuses ou...

  • Byte Bandits CTF

    Official URL
    Total events: 3
    Avg weight: 36.26

    A Capture the Flag Competition held by Byte Bandits, IIT Indore’s academic CTF team.

  • HITB-XCTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 18.33

    This year, HITB-XCTF GSEC Capture the Flag contest will again be co-organized by HITB and XCTF League from China! An Attack & Defense Style CTF competition is planned for the...

  • redpwnCTF

    Official URL
    Total events: 3
    Avg weight: 34.34

    For more information about redpwnCTF, visit: https://ctf.redpwn.net

  • OverTheWire Advent Bonanza

    no logo

    Official URL
    Total events: 3
    Avg weight: 27.32

    Ho Ho Ho, it's that time of year where many people count down the days to Christmas.

    Traditionally, an advent calendar is used which yields one piece of chocolate ev...

  • TG:HACK

    Official URL
    Total events: 3
    Avg weight: 24.61

    TG:HACK is a beginner friendly jeopardy style CTF. It is both onsite and online, as well as a wargame. Our focus is making guiding tasks for beginners, and challenging tasks ...

  • TetCTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 38.51

  • TSG CTF

    Official URL
    Total events: 3
    Avg weight: 36.66

    TSG is the official computer society of The University of Tokyo, and also the name of the CTF team organized by its members.
    Acquiring chance of organizing two domestic...

  • UUTCTF

    no logo

    Official URL
    Total events: 3
    Avg weight: 17.49

    UUTCTF is a student CTF competition which is going to be held by Urmia University of Technology (http://uut.ac.ir). The organization is going to be held in corporation with U...

  • Balsn CTF

    Official URL
    Total events: 3
    Avg weight: 38.47

    This year, we'll hold Balsn CTF 2020 with high-quality and creative challenges!
    We cordially invite your team to join this party!

    Organizers: Balsn (https://bals...

  • YauzaCTF

    Official URL
    Total events: 3
    Avg weight: 22.18

    YauzaCTF is the first large competition organized by university CTF-team SFT0 from Bauman Moscow State Technical University in Moscow, Russsia.

  • peaCTF

    Official URL
    Total events: 3
    Avg weight: 0.00

    peaCTF, Phillips Exeter Academy’s Capture the Flag, is a free online computer security competition for middle school and high school students. Teams of 1-5 competitors decryp...

  • BCACTF

    Official URL
    Total events: 3
    Avg weight: 24.33

    BCACTF is a jeopardy-style competition hosted by the CTF Club at the Bergen County Academies.

  • De1CTF

    Official URL
    Total events: 3
    Avg weight: 24.64

    Supported by XCTF.
    One of the XCTF series.
    Champion will be invited to the XCTF Finals.

  • Affinity CTF

    Official URL
    Total events: 3
    Avg weight: 18.48

    Event description:
    Affinity CTF contest is a side project for conference Affinity Akamai Tech Talks conducted in Krakow Poland and organized by Akamai. It consists of a ...

  • TastelessCTF

    Official URL
    Total events: 3
    Avg weight: 37.01

    The CTF with a disturbing lack of taste, combining binary-heavy challenges with questionable memes and bad puns!

  • CTF InterIUT

    Official URL
    Total events: 3
    Avg weight: 27.81

    A beginner/medium CTF made by students from Hack2g2. The fourth edition made online for this year because COVID.

    We will accept 50 teams of 4 person each. Everyone is...

  • Reply CTF Challenge

    Official URL
    Total events: 3
    Avg weight: 26.42

    Reply will be hosting the Reply Cyber Security Challenge, at its fourth edition, a team competition open to both students and professionals aged 16+. The online challenge wil...

  • D^3CTF

    Official URL
    Total events: 3
    Avg weight: 25.25

    Organized by @Vidar, @CNSS, @L-Team, the 1st D^3CTF is coming!

    Our teams have hosted the HCTF and LCTF for years, and in 2019 we decided to co-host this brand new CTF...

  • justCTF

    Official URL
    Total events: 3
    Avg weight: 30.26

    CTF event organized by justCatTheFish team.

    Official website TBA :)
    Questions: [email protected]

  • Metasploit community CTF

    Official URL
    Total events: 3
    Avg weight: 24.14

    It’s time for another Metasploit community CTF! Last year’s beginner-friendly CTF attracted a wider range of audiences and skill levels than in previous years, so we’re repli...

  • saarCTF

    Official URL
    Total events: 3
    Avg weight: 35.00

    saarCTF is an annual Attack-Defense CTF competition organized by saarsec, the CTF team of Saarland University.

  • Moroccan Cyber Security Camp

    Official URL
    Total events: 3
    Avg weight: 0.00

    Moroccan Cyber Security Camp (MCSC) is an annual event full of various activities like conferences and the workshops guided by professional people and experts in the cuber se...

  • zer0pts CTF

    Official URL
    Total events: 3
    Avg weight: 37.74

    zer0pts CTF is a Jeopardy-style CTF held by zer0pts, a Japanese CTF team.

  • DamCTF

    Official URL
    Total events: 3
    Avg weight: 28.60

    A college CTF hosted by the OSU Security Club.

    Hosted November 6, 00:00 UTC - November 8, 00:00 UTC

  • DawgCTF

    Official URL
    Total events: 3
    Avg weight: 29.46

    UMBC's annual CTF. Beginner level CTF aimed at college students, but open to all!

  • UMDCTF

    Official URL
    Total events: 3
    Avg weight: 34.56

    UMDCTF the annual CTF hosted by the University of Maryland Cybersecurity Club!

  • WeCTF

    Official URL
    Total events: 3
    Avg weight: 30.56

    WeCTF is a CTF with only web challenges. Our vision is to help expose some of the latest vulnerabilities in the web technologies, such as JIT-based side channeling and race c...

  • the3000

    Official URL
    Total events: 3
    Avg weight: 28.96

    CTF brought to you by the3000

  • DownUnderCTF

    Official URL
    Total events: 3
    Avg weight: 28.34

    DownUnderCTF is a online world-wide Capture The Flag (CTF) competition targeted at Australian High School and University Students. Its main goal is to try to up-skill the nex...

  • Tenable CTF

    Official URL
    Total events: 3
    Avg weight: 22.37

    The Tenable Capture the Flag is a Jeopardy-style competition that includes challenges on a range of topics. All skill levels are welcome to compete! Challenges will vary in d...

  • Winja CTF

    Official URL
    Total events: 3
    Avg weight: 19.60

    Registration link: https://ctf.winja.site/register

    Win subscriptions to OffSec training, HackTheBox, Pentester Academy, and many more.

    Sponsor:
    Android</...

  • ForbiddenBITS CTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 40.00

  • BaltCTF Quals

    Official URL
    Total events: 2
    Avg weight: 25.00

  • HitbSecConf CTF (Kuala Lumpur)

    Official URL
    Total events: 2
    Avg weight: 25.00

  • EBCTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 35.00

  • Facebook security hacker competition

    no logo

    Official URL
    Total events: 2
    Avg weight: 5.00

  • UFO CTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 20.00

  • Sharif University CTF Finals

    Official URL
    Total events: 2
    Avg weight: 10.00

  • No cON Name CTF Quals

    no logo

    Official URL
    Total events: 2
    Avg weight: 20.00

  • NotSoSecure CTF

    Official URL
    Total events: 2
    Avg weight: 0.00

  • OWASP CTF

    Total events: 2
    Avg weight: 20.00

  • HITB PRO CTF

    Official URL
    Total events: 2
    Avg weight: 25.00

    Attack and defense CTF contest over 3 days for 20 winning teams (3–5 members per team) from various Capture the Flag contests from around the world.

  • 9447 Security Society CTF

    Official URL
    Total events: 2
    Avg weight: 30.00

  • QIWI CTF

    Total events: 2
    Avg weight: 10.47

  • STMCTF

    Official URL
    Total events: 2
    Avg weight: 0.00

    STMCTF'17 is an offline CTF organized by STM.

  • Hack The Vote

    no logo

    Official URL
    Total events: 2
    Avg weight: 24.06

    A 48 hour Jeopardy style CTF hosted every US presidential election.

  • Kiwi CTF

    Official URL
    Total events: 2
    Avg weight: 20.72

    Hack Dat Kiwi (Kiwi CTF)

    Hack Dat Kiwi is a new CTF franchise designed by security researchers and hackers with the aim of creating quality challenges that the partic...

  • Belluminar

    Official URL
    Total events: 2
    Avg weight: 0.00

  • SSCTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 9.18

  • Sthack

    no logo

    Total events: 2
    Avg weight: 0.00

  • ScytheCTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 0.00

  • IceCTF

    Official URL
    Total events: 2
    Avg weight: 22.91

  • ABCTF

    no logo

    Total events: 2
    Avg weight: 0.00

  • LabyREnth

    no logo

    Official URL
    Total events: 2
    Avg weight: 0.00

  • Moroccan Cyber Security Camp

    Official URL
    Total events: 2
    Avg weight: 25.00

    Moroccan Cyber Security Camp (MCSC) is an annual event full of various activities like conferences and the workshops guided by professional people and experts in the cuber se...

  • SibirCTF

    Official URL
    Total events: 2
    Avg weight: 0.00

    Tomsk, Russian Federation

  • Moscow CTF School

    Official URL
    Total events: 2
    Avg weight: 0.00

    Moscow CTF School 2020 is a jeopardy-style school CTF for Russian school teams, but it will also be available student teams. Student teams will have separate scoreboard and n...

  • 3DSCTF

    Official URL
    Total events: 2
    Avg weight: 24.00

    The 318br, DESEC (sponsor), and Sucuri Capture The Flag (also known as the 3DSCTF) is the first edition of a brazilian competition which goal is to test the hacker skills of ...

  • Game of Pwners

    no logo

    Official URL
    Total events: 2
    Avg weight: 0.00

  • XiomaraCTF

    no logo

    Official URL
    Total events: 2
    Avg weight: 19.70

    Xiomara CTF is the second edition of the Annual CTF conducted as part of Anokha 2017, the annual technical fest of Amrita School of Engineering, Coimbatore. With challenges f...

  • NSK CTF

    Official URL
    Total events: 2
    Avg weight: 0.00

    NSK CTF is a challenge in information security among russian universities and schools. Located in Novosibirsk

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