CTFs
Capture the Flag (CTF) competitions are fun, online computer security contests that include problems ranging widely in category and difficulty.
picoCTF 2021
3/16/2021 — 3/30/2021
RUSecure CTF Qualifying Round
3/1/2021 — 3/26/2021
DiceCTF
2/6/2021 — 2/8/2021
picoCTF Mini
10/1/2020 — 10/30/2020
CSAW RED
9/18/2020 — 9/27/2020
TJCTF 2020
5/22/2020 — 5/26/2020
ångstromCTF 2020
3/14/2020 — 3/19/2020
RUSecureCTF 2020
2/24/2020 — 3/6/2020
CSAW CTF Final Round 2019
11/6/2019 — 11/8/2019
Lockheed Martin CyberQuest 2019
10/26/2019 — 10/26/2019
picoCTF 2019
9/27/2019 — 10/11/2019
CSAW CTF Qualification Round 2019
9/13/2019 — 9/15/2019
RedpwnCTF 2019
8/12/2019 — 8/16/2019
HSCTF 6
6/3/2019 — 6/7/2019
Facebook CTF 2019
6/1/2019 — 6/3/2019
ångstromCTF 2019
4/20/2019 — 4/25/2019
TJCTF 2019
4/5/2019 — 4/9/2019
TAMUctf 2019
2/23/2019 — 3/4/2019
MITRE STEM CTF 2019
1/11/2019 — 1/12/2019
Lockheed Martin CYBERQUEST
10/20/2018 — 10/20/2018
picoCTF 2018
9/28/2018 — 10/12/2018
CSAW Red Team Competition
9/21/2018 — 9/30/2018
TJCTF 2018
8/6/2018 — 8/12/2018
HSCTF 2018
5/19/2018 — 5/26/2018
MITRE STEM CTF 2018
4/20/2018 — 4/21/2018
PACTF 2018
4/16/2018 — 4/30/2018
RUSecure CTF 2018 Qualifying Round
3/17/2018 — 3/31/2018
ångstromCTF 2018
3/16/2018 — 3/21/2018
EasyCTF 2018
2/9/2018 — 2/19/2018
RUSecure CTF 2017 Preliminary Round
11/6/2017 — 12/9/2017
HSF 2017 Qualification Round
9/22/2017 — 10/2/2017
CSAW 2017 Qualification Competition
9/15/2017 — 9/17/2017
MITRE STEM CTF 2017
9/15/2017 — 9/16/2017
HSCTF 2017
5/20/2017 — 5/27/2017
ångstromCTF 2017
4/22/2017 — 4/29/2017
PACTF 2017
4/16/2017 — 4/30/2017
picoCTF 2017
3/31/2017 — 4/14/2017
RUSecure CTF 2017 Qualifying Round
3/18/2017 — 4/1/2017
EasyCTF 2017
3/13/2017 — 3/20/2017
School CTF 2016
11/6/2016 — 11/6/2016
RUSecure CTF 2016 Preliminary Round
10/29/2016 — 11/12/2016
CSAW HSF Quals 2016
9/28/2016 — 10/8/2016
MITRE STEM CTF 2016
9/16/2016 — 9/17/2016
ABCTF 2016
7/15/2016 — 7/22/2016
TJCTF 2016
5/27/2016 — 5/30/2016
PACTF 2016
4/10/2016 — 5/1/2016
sCTF 2016 Q1
4/8/2016 — 4/15/2016
CamsCTF 2016
3/20/2016 — 3/27/2016
EasyCTF 2015
10/31/2015 — 11/11/2015
picoCTF 2014
10/27/2014 — 11/7/2014