Register a team and go head to head against other hackers across web,
crypto, and reverse engineering challenges. Break in, grab the flag,
climb the board. Hosted and run by AetherGuard Technologies, with a
new competition every month, so there is always another one to enter.
We use one cookie, to keep your team logged in and to protect forms from tampering. We do not use tracking, advertising, or analytics cookies. See our privacy policy.
What cookie is this, and why
Name
ctfsess
Purpose
Keeps your team signed in as you move between pages, and carries a security token that stops other sites from submitting forms on your behalf
Type
Strictly necessary
Set by
ctf.aetherguard.xyz only, never a third party
Duration
Cleared when you close your browser
This cookie is required for login and form security, so it cannot be fully disabled without breaking the site.
Choosing decline just means we will not ask again on this browser.
