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h4ckc0n
H7CTF
Hack.lu
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HackAstra
HackCon
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hxp
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insomnihack
Intent
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involuntaryCTF
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perfectblue
picoCTF
pingCTF
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plfanzen
PointerOverflow
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sknbCTF
smileyCTF
snakeCTF
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SpamAndFlags
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squ1rrel
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Tenable
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TFC
TGHACK
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TheCyberJawaraInternational
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THJCC
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tkbctf
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ToH
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TraceAthenaOSINT
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TrellixHAX
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TSG
TsukuCTF
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WHY
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wtf
WxMCTF
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x3ctf
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Z0d1ak
zer0pts
Zh3r0
$N1PH€RS CTF
*ctf
0ByteCTF
0x00ctf
3DSCTF
404 CTF
44CON CTF
8bit
9447 Security Society CTF
@Hack
@HackCTF
A Renewal Agent
ABCTF
AceBear Security Contest
ACECTF
ACS(ASEAN Cyber Shield) CTF
Affinity CTF
AI vs Human CTF
airgapctf2020
Ajman University CTF
AlexCTF
Alfa CTF
ALICTF
ALL.MN CTF
AltayCTF
AMSI CTF
Anti-Slop CTF
APAIUT-CERT Quals
Aperi'CTF
APort Vault CTF
April Fools' GTF
ASCF CTF
ATAST CTF
Athena CTF
ATLA Opening Date CTF
Automotive CTF Japan
AvitoTech CTF
AVSS (Adversarial Vulnerability Scoring System) Contest
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BACCC Regionals
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Bank Security Challenge
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BOOT 2 ROOT(CTF)
Boston Key Party CTF
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Breach Bytes 2.0
Breach Point CTF
BreachPoint
Break In
BSides Ahmedabad CTF
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BTH_CTF
BUET CTF
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Bugs Bunny CTF
ByteMe CTF
C4CTF
Can-CWIC CTF
Capture Point
Capture the Flag - Incredia
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Capture The TI_eRx
CaptureTheFIC
CaptureTheWU
Carthage Cyber Arena
CAT Reloaded CTF
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CBM CTF
CCTF
CDCTF
Challenge the Cyber
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CipherHunt
CipherHunt 2.0
CISA ICS CTF
CITEFLAG
CityF atBash
Clash of Cybers
Code X Sport Jung'23 CTF
Codean CTF
Cohesion
Collegiate SECTF
Conquer the World by IEEE-VIT
Content Creators Club CTF
Covid-19 CTF
CRAC CTFs
CRACK-IN 2.0
CREST CTF
CRMA mini CTF
CrypT_Find
CryptixCTF
CryptoBurst CTF
CS166 x FSAB CTF
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CSAW Embedded Security Challenge Quals
CSCAMP CTF Finals
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CSCTF
CTF 313
CTF After Dark
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CTF InterIUT
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CTF Russian Cup
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ctf.moscow
CU school CTF
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Cyber conclave | KI CTF
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Cyber@Hack
CyberBytes
CyberCup Indian Ocean
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DC509 CTF
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DEFKTHON CTF
Deloitte CTF
DerbyCon
DHM
Dialed Up CTF
Die Abenteuer von KIM & TIM
Digital Forensics Challenge by DFIR Labs
DIMVA CTF
DomeCTF
DoubleS1405 CTF
Dz-Hack-Event
e-Jornadas
easterpwn
EasyCTF
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EMC Defenders League Quals
EncipherX CTF
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EnigmaXplore 2.0
ENOWARS
EPIHACK CTF
Equinor CTF
Esaip CTF
Eschaton CTF
Espilon CTF
Ethernaut CTF
EYCC CTF
EyesOpenCTF
Facebook security hacker competition
FarEastCTF
Fartfire
FAUST CTF
FIT-HACK CTF
Flagyard - HITB SecConf Bangkok
FlightPath
Fluid Attacks CTF
FMCTF
ForbiddenBITS CTF
Fweefwop CTF
g0s CTF
GaianSpace CTF
Game of Pwners
GEEK CTF
Geekpwn x Tencent YDLAB Cloud Range Challenge
GirlsGoCyberStart
GITEX GLOBAL CTF
GITxIITB TL CTF
Global CyberPeace Challenge
GoIda CTF
Goldrush Gauntlet
GooseCTF
GREP CTF 2.0
Ground Zero- Hackathon- CTF, Siliguri
gryphCTF
Guardians of the TI
Guinean Cyber Security Challenge
GunnHacks
h1702ctf
h34dCTF
H4ckIT CTF
Hack a Bit
Hack For Troops
HACK KAP CTF
Hack The Nexus - Blizzard CTF
Hack Zeugma
Hack'In
HACK'OSINTCTF
Hack2Dawn CTF
Hack4Krak
HackDay CTF
HackDayCTF
Hacker's Gambit
Hackfest
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HackHowl
HackIT CTF
hackrocks Cyber Summer Camp
HackTheDrone CTF
HACKTHEON SEJONG
HacktorX CTF
Hacktrick CTF
Hackvens
Hacky Holidays
Hackअस्त्र CTF Qualifiers
HACON_CTF
Hardware CTF at hardwear.io Netherlands
hardwear.io CTF
HCTF
HI Cyber Con CTF
HICAThon 1.0
HITB Amsterdam Pro CTF
HITB CTF Amsterdam
HITB LOCKDOWN CTF
HITB PRO CTF
HITB SECCONF CTF
HITB-XCTF
HitbSecConf CTF (Kuala Lumpur)
HITCON Cyber Range
HKCTF Open Semi-Final
Hospital Under Siege CTF
HSCSEC
HSE CTF
HTBLuVA Villach CTF
HumanCTF
HUNTING SEASON: GROUP-IB 20TH ANNIVERSARY CTF
HUST Hacking Festival
IBST.PSU CTF
ICCSDFAI CTF
IceCTF
ICG CTF
ICON CTF
iCTF
IDEH
if(is) - CTF
IFIP SEC Capture-the-Flag
IHS CTF
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InfiniteCTF
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INTECHFEST
Internetwache CTF
Intigriti Monthly Challenges
Iran Tech Olympics CTF
ISFCR CTF
ISSessions Espionage CTF
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İGÜCTF
Jeanne d'Hack CTF
JISCTF
JUCTF
Jule CTF
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K!nd4SUS CTF
KAALCHAKRA CTF
Kaizen arabia CTF
Kali Team - CTF
Kaspersky Industrial CTF Finals
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Kernel Kombat
Kettle CTF
Kiwi CTF
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L3m0n CTF
LabyREnth
Laokoon Security CTF
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LinuxMeetup
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Lockett Vesp Range
LowLandMink's CTF
Lun4R CTF
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MAGIC
MalCon CTF
Maltego Community OSINT CTF
Mars@hack
Metared Argentina
Metasploit community CTF
MetaTrust Web3 Security CTF Competition
mHackeCTF
MHSCTF
Mimic
MindBreak
MireaCTF
MIT/LL CTF
MITCTF
MITRE eCTF
MLSC Capture The Flag
MOCA - Metro Olografix - CTF
Moroccan Cyber Security Camp
Moscow CTF School
Mozilla CTF
MythX: An Endgame Protocol CTF
Narxoz CTF
NaSCon CTF
Newark Academy CTF
Newbie CTF(N-CTF)
NileCTF 2026
No cON Name CTF Finals
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No Hat CTF
NoNameCon CTF
Nordic IT Security Hackathon
NorthSec CTF
NotSoSecure CTF
noxCTF
NSK CTF
NSSCTF
Null Origin
Olympic CTF
OmCTF
OmniCTF
OmWars CTF
OpenCTF
Operation Cipher Shadows
ostctf
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OtterCTF
Outback Overflow
OWASL-IL CTF
OWASP CTF
Pacific Hackers CTF
PACTF
PASECA CTF
peaCTF
PECAN+ CTF
Peng Cheng – Macau Federation Cybersecurity Range Competition
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PH03N1X V1P3R N0V4 CTF
ph0wn
Phantom CTF
PHD CTF Finals
PHD CTF Quals
PINK+ CTF
PlayCyber
PoliCTF
PolyPwnCTF
Potsdam Cyber Games
Power Of Community - POC CTF
Power of XX
Procom CTF
PSUT
Punk Security DevSecOps birthday CTF
PUTCyberDays CTF
Pwn2Play Open CTF
Pwnium CTF
PwnTillDawn CTF
PwnverseCTF
Pàlcam CyberGames
Qiangwang Challenge on Cyber Mimic Defense
QIWI CTF
r2con CTF
RADARCTF
Radio Activity CTF
RamadanCTF
Rams CTF
RatCTF
Razer CTF
Really Awesome CTF
RED CTF
Red Team Lounge CTF
Redfox CTF
REDHACK
RedTeam
Reply CTF Challenge
Republic of Cyber Sentinals
RESTCON CTF
riceteacatpanda
riftCTF
Riscure Hack me CTF
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RootedCON
RPCA CTF
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SCAN Digital Asset Tracing Challenge
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ScytheCTF
SecOps'24 - Blue Teaming CTF
SECPlayground CTF
Secret of the ePA-TI
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Secura Grand Slam
Securebug.se CTF
Security Case Study
SecurITy Challenge - VianuCTF
Seize da Flaq
SHA CTF
shadow CTF
Sharif University CTF
Sharif University CTF Finals
Shellter Hacking Express
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Sieberrsec CTF
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Singapore AI CTF
SkillBit (formerly MetaCTF)
SLAY CTF
smolathon
Snowfort
SOC Battle
Sogeti Cyber e-Scape
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Space Grand Challenge
SPbCTF's Student CTF
spoilersCTF
SPRUSH CTF
SSCTF
SSMCTF
Stack The Flags
STANDCON CTF
Standoff Cyberbattle
STAY ~/ CTF
Stealth-Cup
STEM CTF
Sthack
STMCTF
Stranger's CTF
Sudocrypt
SUN CTF
Synchrony Infosec University Hackathon
Säkerhets-SM
Sécu'RT
T-CTF
T3 Phoenix CTF
Takoma Park CTF
Tangerang Kota Capture The Flag
TCM Invitational CTF
TCS Hackquest
Team Matrix CTF
TeamH4C CTF
Technex CTF
th3jackers WCTF
The Cyber Cooperative CTF
The Haunted Brewery
The heart of sysola
The Threat Interceptors Challenge
TheDeccanCTF
Thryve CTF
ThunderCipher CTF
Tiger King CTF
Timisoara CTF
TON CTF
Trace Labs Global OSINT Search Party CTF
Trend Micro CTF - Raimund Genes Cup
Triada CTF
TRIBE CTF
TrojanCTF
TSJ CTF
TU Delft CTF
TuxCTF
TyumenCTF
UConn CyberSEED
UFO CTF
Ukrainian National CTF
UND CyberHawks National Capture The Flag Competition
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UNIT 7300 CTF
UNLOCK THE TECHNOVERSE
UralCUP
usd Hacking Night
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vulnfreak
WatchList CTF
WayneState - Capture-The-Flag
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Web-vkl CTF
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WhiteHat Challenge
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World Hacker Games - TestSavant
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wtftime CTF
X-MAS GTF
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YCTF
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3 challenges tagged
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Challenge
CTF
Weight
Category
Has
Alter_Ego
#csidh
#isogeny
SekaiCTF 2025
55.00
Crypto
files
src
wu 1
seaside
#csidh
#isogeny
#oblivious-transfer
DiceCTF 2023
36.70
Crypto
files
wu 1
infinity
#csidh
hxp 2021
99.41
Crypto
files
wu 1