Learn cybersecurity.Practice safely.Build secure systems.Learn security.Practice safely.Secure systems.

OmniCYBR is an international cybersecurity nonprofit in Romania. We serve the public with free learning resources, authorized competitions, and a community built around responsible security practice.

Explore our programs Learn what we do, who we serve, and how to participate.

Redirecționează 3,5% din impozitul pe venit către OmniCYBR.

Nu este o donație. Este o parte din impozitul pe care l-ai plătit deja și care merge la bugetul de stat dacă nu ceri altfel. Completezi formularul, semnezi pe ecran cu mouse-ul sau cu degetul, iar noi îl depunem la ANAF. Banii merg în educație gratuită de securitate cibernetică.

Completează Formularul 230 Romanian income tax only. It costs you nothing.

Costă 0 lei
Durează 2 minute
Depunem noi la ANAF
Termen 25 mai

Everyone must have access to practical cybersecurity training.

Learn cybersecurity through practical work.

OmniCYBR connects learners, challenge authors, mentors, and security professionals. We provide safe systems where people can test ideas, solve problems, and share solutions.

Read about OmniCYBR

Citește pe scurt în română

OmniCYBR este o asociație nonprofit din România care dezvoltă educație practică în securitate cibernetică prin competiții, resurse deschise și comunitate.

Intră pe Discord

Learn for free
Practice on safe systems
Share open resources
Work as a team

Start with a
security challenge.

2026 event archive

OmniCTF

OmniCTF is an online Capture the Flag (CTF) competition. It runs for 48 hours. Teams solve security challenges on authorized systems. Each challenge has a hidden code called a flag.

Location and duration: Online - 48 hours
Finals places: 12 teams
2026 event: Completed

Get event updates on Discord Learn about OmniCTF

hacker@omnictf:~$ cat flag.txt

                         0@0@0@0@0@0@0@
                       8686868    6868686
                     #%#%#            %#%#%
                   @0@0                  @0@0
                  8686                    8686
                  #%#                      %#%
                  @0@                      0@0
                  686                      868
                  %#%                      #%#
                  0@0                      @0@
                  868     868686868686     686
                  #%   %#%#%#%#%#%#%#%#%#   #%
                     0@0@0@0@0@0@0@0@0@0@0@
                   86868686868686868686868686
                 #%#%#%#%#%#%#%#%#%#%#%#%#%#%#%
               @0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0
             68686868686868686868686868686868686868
           %#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#
         0@0@0@0@0@0@0@0@0@0        @0@0@0@0@0@0@0@0@0@
       8686868686868686868            6868686868686868686
     #%#%#%#%#%#%#%#%#%#%              #%#%#%#%#%#%#%#%#%#%
   @0@0@0       0@0@0@0@0              @0@0@0@0@       @0@0@0
 6868   868686868  686868              686868  686868686   6868
#%#%  #%#%#%#%#%#%#  %#%#%#          %#%#%#  %#%#%#%#%#%#%  #%#%
@0@  0@0@0@0@0@0@0@0  @0@0@0@      0@0@0@0  @0@0@0@0@0@0@0@0@0@0
686  868686868686868  6868686      8686868  68686868686868686868
%#%  #%#%#%#%#%#%#%#  %#%#%#        %#%#%#  %#%#%#%#%#%#%#%#%#%#
0@0@  0@0@0@0@0@0@0  @0@0@0@        0@0@0@0  @0@0@0@0@0@0@  0@0@
 6868  68686868686 686868686        868686868 86868686868  6868
   %#%#%   %#    %#%#%#%#%#          %#%#%#%#%#    %#   #%#%#
    @0@0@0@0@0@0@0@0@0@0@0@          0@0@0@0@0@0@0@0@0@0@0@0
       86868686868686868686          86868686868686868686
        %#%#%#%#%#%#%#%#%#%          #%#%#%#%#%#%#%#%#%#
          0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@
             68686868686868686868686868686868686868
               %#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#%#
                 0@0@0@0@0@0@0@0@0@0@0@0@0@0@0@
                   86868686868686868686868686
                     #%#%#%#%#%#%#%#%#%#%#%
                       @0@0@0@0@0@0@0@0@0
                         68686868686868
Welcome to OmniCTF!
               Hope you have a great adventure.
OmniCTF{h3y_th3r3} 👋

Open knowledge

Learn from each solution

A writeup records the steps that solved a challenge. Workshops use these steps for guided practice.

Read learning resources

International network

Work as a team

Meet players, challenge authors, mentors, and organizers. Learn from their security knowledge.

See ways to participate

How a CTF
works.

A CTF is a set of security challenges. You inspect an authorized system and find its flag. Then, you record the steps that you used.

Read the instructions

Read the task, the target information, and the goal.

Test the system

Test only the system that the challenge identifies.

Find the flag

Find the hidden code that confirms the solution.

Record the solution

Record each step. Share the writeup so other people can learn.

Security is a team sport.
Learn together. Build secure systems.

Take part in
OmniCYBR.

Meet the people who organize OmniCTF. Join a team, create challenges, share writeups, or help us run an event.

The Join page explains each role and gives you an email option that does not require Discord.

Choose how to participateLearn, create challenges, mentor, organize, or partner with us Use our learning resourcesRead original guides on the OmniCYBR website Contact the associationAsk about education, partnerships, events, or accessibility