We build innovative Capture the Flag games that pit hackers from around the world against the smartest analog adversaries and computerized challengers known.
The future of Capture the Flag is now, and it's never been brighter.
Online, free, and for security enthusiasts and hackers of any skill level. Registration open now!
Midnight UTC, May 21, 2016
Midnight UTC, May 23, 2016
Witness the top hackers in the world battle it out head-to-head live at DEF CON in Las Vegas.
August 5, 2016
August 7, 2016
You can qualify for our finals in Las Vegas by winning one of several different competitions online and around the world, or placing well in our qualifiers held online May 21-23.
|DEF CON CTF 2015||May 16 - Aug. 9 2015||Qualified DEFKOR|
|HITCON CTF||Oct. 17 - Dec. 6 2015||b1o0p|
|RuCTFE||Nov. 21, 2015||Qualified StratumAuhuur|
|SECCON CTF||Dec. 5 2015 - Jan. 31 2016||Already qualified Cykorkinesis/DEFKOR|
|32C3 CTF||Dec. 27 - 29 2015||Qualified pasten|
|Boston Key Party||Mar. 4 - 6 2016||Qualified HITCON|
|PlaidCTF||Apr. 15 - 17, 2016||LC↯BC|
|0ctf||Mar. 12 - Apr. 24, 2016||Already qualified LC↯BC|
|DEF CON CTF 2016 Qualifiers||May 21 - 23, 2016||Online Jeopardy style, qualifying multiple teams|
|DARPA Cyber Grand Challenge||August 4, 2016||All-machine competition, on-site in Las Vegas|
Legitimate Business Syndicate is proud to have run some of the most well-regarded hacking contests in the world.