CTFtime
Free- Name
- CTFtime
- Category
- Cybersecurity/ Bug Bounties & CTF
- Tags
- Bug Bounties & CTFCybersecurityFree
- Official URL
- https://ctftime.org
- Summary
- Global CTF calendar and rankings.
About this site
What is CTFtime?
CTFtime (ctftime.org): Global CTF calendar and rankings. We list it under “Cybersecurity · Bug Bounties & CTF”.
What it is good for
Submit vulnerabilities through legitimate programs for bounties, or practice with CTF competitions.
Before you use it
Strictly follow each program’s scope and rules — out-of-scope testing can have legal consequences. Has a free version or free credits; advanced features may cost extra.
How to open it
Click “Open site” above to open ctftime.org in a new tab. Check the domain in the address bar before you sign in or pay.
- 1Click “Open site”It opens in a new tab
- 2Check the domainMake sure it is ctftime.org
- 3Then sign in or payTwo-step verification is safer
At a glance
FAQ
Is CTFtime free?
It offers a free version or quota. Advanced features may be paid; check the official pricing page.
Can CTFtime be opened directly from mainland China?
We have not verified this for every site. It depends on your network; try again later if it does not open.
How do I know I am on the official CTFtime site?
The domain we list is ctftime.org. Check the address bar and watch for lookalike spellings such as paypa1 or arnazon, especially when signing in or paying.
Are there alternatives to CTFtime?
“Similar sites” below lists others in “Cybersecurity” so you can compare them.
What if the CTFtime info is wrong or the link is broken?
Use “Report a broken link or wrong info” below and we will update it after checking.