Sat, 21 March 2026, 10:00 UTC — Sat, 21 March 2026, 17:00 UTC 
On-site
Dublin, Ireland
A ZeroDays CTF event.
Format: Jeopardy 
Official URL: http://www.zerodays.ie/
Event organizers
Prizes are awarded to the top 3 players in each category (INTERNATIONAL, COLLEGE + OPEN).
Thousands of euro worth of prizes including gaming consoles, tablets, lab vouchers etc.
Prizes for 1st, 2nd and 3rd place in each of our Colleges, International and Open sections, as well as spot prizes throughout the day.
Further details TBC.
ZeroDays is Ireland's largest CTF. Running since 2015, it has grown to be the largest on-site, one-day CTF in the world. In 2025 over 130 teams of four competed with over 500 competitors in total. The event has three categories for Irish colleges, International teams and an Open section for any team to enter.
International competitors welcome. Expect a wide range of challenges suitable for all skill levels; plenty of easy challenges for newer players and some very advanced challenges for experienced players.
International teams can purchase a ticket here: https://www.eventbrite.ie/e/zerodays-ctf-2025-10th-anniversary-tickets-1130688773559
The CTF will take place in Croke Park on the 21st of March. This is an on-site event and will not be accessible to remote teams; any questions you can reach our team via discord: https://discord.gg/kasG4Fm8uk
147 teams total
| Place | Team | CTF points | Rating points | |
|---|---|---|---|---|
| 1 | 0-Day Aarhus | 9850.000 | 0.000 | |
| 2 | Slovak Cyber Team | 9460.000 | 0.000 | |
| 3 | Mntcrl | 9370.000 | 0.000 | |
| 4 | UK Lawnmowing Team | 9210.000 | 0.000 | |
| 5 | Pwncetta e Pecorino | 9070.000 | 0.000 | |
| 6 | Rick Astley and the 6/7 Crew | 8455.000 | 0.000 | |
| 7 | Slovak Cyber Team 7 | 8044.000 | 0.000 | |
| 8 | happy bday Piotr | 7830.000 | 0.000 | |
| 9 | InfoSecIITR | 7738.000 | 0.000 | |
| 10 | Claude’s Coders | 7714.000 | 0.000 | |
| 11 | brr brr hackapim ✅ | 7519.000 | 0.000 | |
| 12 | Peckit Scrubberz | 7356.000 | 0.000 | |
| 13 | 0daysober | 7021.000 | 0.000 | |
| 14 | Cache Me If You Shell | 6856.000 | 0.000 | |
| 15 | getin.bin 0.668 | 6825.000 | 0.000 | |
| 16 | byte me | 6630.000 | 0.000 | |
| 17 | gitHappens | 6607.000 | 0.000 | |
| 18 | RawDogz | 6380.000 | 0.000 | |
| 19 | ████████████ | 6214.000 | 0.000 | |
| 20 | Keegan's Angels | 6026.000 | 0.000 | |
| 21 | fuair fréamh? | 5990.000 | 0.000 | |
| 22 | UKC3 | 5935.000 | 0.000 | |
| 23 | Flag DOMination | 5713.000 | 0.000 | |
| 24 | 1-Day Aarhus | 5711.000 | 0.000 | |
| 25 | Backdoor Baddies | 5542.000 | 0.000 | |
| 26 | SoftCrime | 5517.000 | 0.000 | |
| 27 | SighBurCrym | 5399.000 | 0.000 | |
| 28 | Organised Confusion | 5315.000 | 0.000 | |
| 29 | omarsuri2311 | 5257.000 | 0.000 | |
| 30 | Jigsaw | 5257.000 | 0.000 | |
| 31 | The XORcists | 5252.000 | 0.000 | |
| 32 | Yazoo | 4971.000 | 0.000 | |
| 33 | Fantastic4-1 | 4911.000 | 0.000 | |
| 34 | iGOON2GRANNYS | 4871.000 | 0.000 | |
| 35 | 8th company | 4864.000 | 0.000 | |
| 36 | Kazama | 4798.000 | 0.000 | |
| 37 | Password.txt | 4717.000 | 0.000 | |
| 38 | 6 7's | 4699.000 | 0.000 | |
| 39 | Gamblers United | 4690.000 | 0.000 | |
| 40 | Packet Predators | 4569.000 | 0.000 | |
| 41 | The Architects | 4518.000 | 0.000 | |
| 42 | Craic Overflow | 4501.000 | 0.000 | |
| 43 | SETU - MUTEX | 4477.000 | 0.000 | |
| 44 | Our safe-word is 'Pineapple Juice' | 4412.000 | 0.000 | |
| 45 | [object Object] | 4407.000 | 0.000 | |
| 46 | Fly High Chuck Norris | 4369.000 | 0.000 | |
| 47 | look at all those flags | 4292.000 | 0.000 | |
| 48 | Neko_Arch | 4255.000 | 0.000 | |
| 49 | Le Epic Team | 4250.000 | 0.000 | |
| 50 | Kali and Kans | 4235.000 | 0.000 | |
| 51 | Do you know the wae (to the flag)? | 4216.000 | 0.000 | |
| 52 | TH3_1TCR0WD | 4215.000 | 0.000 | |
| 53 | Dubh Null | 4167.000 | 0.000 | |
| 54 | 86 | 4155.000 | 0.000 | |
| 55 | Arch, btw | 4033.000 | 0.000 | |
| 56 | Cache Me Outside | 3961.000 | 0.000 | |
| 57 | Grey Hats | 3943.000 | 0.000 | |
| 58 | Scallyraine | 3926.000 | 0.000 | |
| 59 | Cyber Kittens | 3915.000 | 0.000 | |
| 60 | Rubber Duckies | 3856.000 | 0.000 | |
| 61 | The Parish | 3802.000 | 0.000 | |
| 62 | TheMajor | 3797.000 | 0.000 | |
| 63 | HackerCatz | 3743.000 | 0.000 | |
| 64 | Hash Brownies | 3688.000 | 0.000 | |
| 65 | SaltnPepper | 3635.000 | 0.000 | |
| 66 | Loading... | 3534.000 | 0.000 | |
| 67 | stop saying 67 its almost 2026 | 3501.000 | 0.000 | |
| 68 | NegativeZero | 3376.000 | 0.000 | |
| 69 | TUD IT Blocked Our Port Scanner | 3365.000 | 0.000 | |
| 70 | Fours Company | 3364.000 | 0.000 | |
| 71 | 𓂧𓋴 𓏏𓉔𓇋𓋴 𓅃𓂋𓈎 | 3321.000 | 0.000 | |
| 72 | WorldSkills | 3318.000 | 0.000 | |
| 73 | Famine To Flavour | 3315.000 | 0.000 | |
| 74 | To Hell or To ATU | 3312.000 | 0.000 | |
| 75 | Error404_Flag Not Found | 3260.000 | 0.000 | |
| 76 | Phish and Chips | 3240.000 | 0.000 | |
| 77 | Tbyb2026 | 3030.000 | 0.000 | |
| 78 | clover | 3011.000 | 0.000 | |
| 79 | Hacksmash my name is Borat | 3010.000 | 0.000 | |
| 80 | Thr34tSh4de | 2995.000 | 0.000 | |
| 81 | Sand Guardians, Guardians of the Sand | 2993.000 | 0.000 | |
| 82 | BOMBATS | 2968.000 | 0.000 | |
| 83 | Church of Emacs | 2942.000 | 0.000 | |
| 84 | R4nch3r0s | 2862.000 | 0.000 | |
| 85 | CMD Lions | 2850.000 | 0.000 | |
| 86 | HackTuah | 2736.000 | 0.000 | |
| 87 | nyancat -nvlp 4444 | 2692.000 | 0.000 | |
| 88 | Very Alpha, Rare Sigma | 2597.000 | 0.000 | |
| 89 | Hack4Craic | 2575.000 | 0.000 | |
| 90 | Cereal killer | 2557.000 | 0.000 | |
| 91 | Special Overflow Operation | 2556.000 | 0.000 | |
| 92 | stonks | 2553.000 | 0.000 | |
| 93 | Strawberry Flag Marshalls | 2497.000 | 0.000 | |
| 94 | CYPHERPUNK | 2467.000 | 0.000 | |
| 95 | Tud boys | 2429.000 | 0.000 | |
| 96 | JP | 2407.000 | 0.000 | |
| 97 | Byte Crackers | 2376.000 | 0.000 | |
| 98 | The DENNIS System | 2368.000 | 0.000 | |
| 99 | ByteBreakers | 2351.000 | 0.000 | |
| 100 | Transport Layer | 2340.000 | 0.000 | |
| 101 | LizardZz | 2298.000 | 0.000 | |
| 102 | Bossy Pants | 2295.000 | 0.000 | |
| 103 | ZeroDaySquad | 2278.000 | 0.000 | |
| 104 | The4Musketeers | 2266.000 | 0.000 | |
| 105 | 856ers | 2264.000 | 0.000 | |
| 106 | Control.Alt.Elite | 2192.000 | 0.000 | |
| 107 | HashCrack | 2183.000 | 0.000 | |
| 108 | AckRaiders | 2145.000 | 0.000 | |
| 109 | joyboy | 2096.000 | 0.000 | |
| 110 | Power Rangers | 2074.000 | 0.000 | |
| 111 | CSIT | 2047.000 | 0.000 | |
| 112 | BinaryBytez | 2030.000 | 0.000 | |
| 113 | 0x01 | 2029.000 | 0.000 | |
| 114 | GetShrekd | 1960.000 | 0.000 | |
| 115 | Africc3 | 1957.000 | 0.000 | |
| 116 | CraicOverflow | 1951.000 | 0.000 | |
| 117 | CheekyHackers | 1874.000 | 0.000 | |
| 118 | 404: Teammates Not Found | 1846.000 | 0.000 | |
| 119 | Pauselock | 1830.000 | 0.000 | |
| 120 | skill issue | 1819.000 | 0.000 | |
| 121 | Real_HostBusters | 1695.000 | 0.000 | |
| 122 | Xx_SkibidiOhioKaliLinuxbrainrottedHackerSqwad_xX | 1694.000 | 0.000 | |
| 123 | Sp1d3rBy7e | 1674.000 | 0.000 | |
| 124 | GYSK DOMINION | 1612.000 | 0.000 | |
| 125 | dcu_hack | 1579.000 | 0.000 | |
| 126 | Anything :) | 1515.000 | 0.000 | |
| 127 | Phish & Chips | 1432.000 | 0.000 | |
| 128 | Rootless Hunters | 1300.000 | 0.000 | |
| 129 | DR0G3N_H3X | 1198.000 | 0.000 | |
| 130 | &AFRICC | 1190.000 | 0.000 | |
| 131 | Game Changer | 1050.000 | 0.000 | |
| 132 | teletubbies | 1000.000 | 0.000 | |
| 133 | KETB | 950.000 | 0.000 | |
| 134 | boburuncle | 800.000 | 0.000 | |
| 135 | BoostMobile | 746.000 | 0.000 | |
| 136 | Evolutions Apex | 550.000 | 0.000 | |
| 137 | Artillery Print | 550.000 | 0.000 | |
| 138 | BRYAN MILLS | 523.000 | 0.000 | |
| 139 | MackTeam | 500.000 | 0.000 | |
| 140 | Noob | 400.000 | 0.000 | |
| 141 | Stinky | 350.000 | 0.000 | |
| 142 | Cyber Frogs | 350.000 | 0.000 | |
| 143 | CSUF | 300.000 | 0.000 | |
| 144 | B-52-Stratofortress | 300.000 | 0.000 | |
| 145 | mcr | 300.000 | 0.000 | |
| 146 | byteMe | 250.000 | 0.000 | |
| 147 | APT67 | 150.000 | 0.000 | |
