TJCTF 2026

official repo

TJCTF is an international cybersecurity competition hosted by TJ Computer Security Club (tjcsc), a group of students from Thomas Jefferson High School for Science and Technology in Northern Virginia.

Prizes are sponsored by Zellic, Hex-Rays, TryHackMe, and APIsec.

Twitter: https://twitter.com/tjctf Email: contact@tjctf.org Discord: https://discord.gg/w5xapGP

Competition is online.

Infra sponsored by goo.gle/ctfsponsorship

Web 2

Challenge	Has
chained	files
free_cloud_storage	files

Pwn 3

Challenge	Has
Greetings	files
Ox78	files
hunting_field	files

Reverse 4

Challenge	Has
maze_escape	files
polaroid	files
remoose	files
rotated #reversing #byte-rotation	files wu 1

Crypto 10

Challenge	Has
TAUtology	files
bit_leak	files
celestial_vault	files
crashout	files
minervas_stopwatch	files
multiplication_as_a_service	files
squares	files
stained_glass	files
trust_issues	files
wavy	files

Forensics 10

Challenge	Has
check_the_fine_print	files
invisible_ink	files
loud_packets #network-forensics #pcap #spectrogram	files wu 1
obscure_crusher_1	files
obscure_crusher_2	files
skeleton	files
thomas_schools_of_china	files
triplets	files
unfinished_file	files
voice_in_the_packet	files

Misc 5

Challenge	Has
dancing_bird	files
delta_doodle	files
glitch	files
mind_blasters	files
mind_blowers	files