capture the flag

CSAW CTF is one of the oldest and biggest CTFs with 1301 teams with 1+ point in 2019. Designed as an entry-level, jeopardy-style CTF, this competition is for students who are trying to break into the field of security, as well as for advanced students and industry professionals who want to practice their skills.


CSAW CTF occurs over two rounds with an online Qualifying Round in September and, in 2020, an Online Final round in November. Typically, Finals is in-person, but COVID-19 restrictions have resulted in the need for events to be held virtually this year. 

competition timeline

Registration Open: 

1 July 2020 

48-hour Online Qualifying Round:     

11 September 2020, 20:00 UTC - 13 September 2020, 20:00 UTC

Finalist Notification:   

16 - 25 September 2020

36-hour Online Final Competition:

6 - 8 November 2020

Exact 36-hours to be announced by timezone. 

participating regions

rules & eligibility

CTF Rules Image

ctf registration

competition organizers & challenge writers

CTF is developed and managed by the NYU OSIRIS Lab. Challenges are written and contributed by Lab members, alumni, industry friends and partners. 

Email the CTF Global Leads

2020 winners & finalists 

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© 2020 by NYU Tandon School of Engineering CSAW