TJCTF, the TJ Computer Security Club's Capture The Flag (CTF) Competition, is an online CTF competition similar to PicoCTF. It is targeted at high schoolers interested in computer science and cyber security. Each participant will compete on a team of up to 5 people and solve problems ranging from binary exploitation to cryptography. While CTFs are frequently branded as security competitions, the techniques they teach are often useful in many fields of computer science. Anyone who enjoys working with computers and solving challenging puzzles is encouraged to compete. While only American high school students (or younger) are eligible for prizes, anyone can play for fun. You can also follow us on Twitter and like our Facebook Page. If you have any comments or questions, feel free to contact us at [email protected].