• Sat, 03 August 2019, 01:00 UTC - Mon, 05 August 2019, 01:00 UTC (48 hours in total)


  • 1st place 1,500 USD & qualification to XCTF Finals 2019
  • 2nd place 800 USD
  • 3rd place 500 USD
  • * All prices include 20% taxes

De1CTF Sponsors

  • Red Hat Security Lab


  1. Top 10 teams should submit writeup within 24 hours after the competition.
  2. Teams breaking rules may be penalized or excluded from the competition.
  3. It is not allowed for teams with independent accounts to cooperate, or share any flag/hints.
  4. It is not allowed to attack the competition infrastructure. If flaws in the infrastructure are found, please report to us.
  5. It is not allowed to sabotage or in any way hinder the progress of other competing teams. This includes attempting to destroy a challenge after you have completed it.
  6. It is not allowed to generate large amounts of traffic. None of the challenges can be solved by running automated scanners.
  7. It is not allowed to brute-force challenge flags/keys against the scoring site.
  8. For placing teams to receive prizes, they must submit a full and detailed writeup of each challenge, explaining how it was solved.
  9. Organizers may rearrange/modify contest problems, proceedings, and rules.