picoCTF 2019

picoCTF 2019 will be held September 27 - October 11, 2019!

2018 Shell Server Consolidation

As part of the groundwork for the upcoming 2019 competition, we are re-organizing our infrastructure of past competition servers. The 2018shell1 through 2018shell4 servers have been consolidated to a single 2018shell.picoctf.com host.

As a result, a small number of problems have been re-assigned to different ports, and a few problems have newly randomized flags. Please see the Piazza problem status post for details, and double-check your problem descriptions for any on that list.

Registration Open Year-round

Not registered yet? Click here to get started!

picoCTF is the largest hacking contest ever. We are offering a limited number of exclusive sponsorship opportunities to companies. Take part in shaping tomorrow’s workforce.

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