PACTF, short for Phillips Academy Capture The Flag, is a free online cyber security and computer science competition for middle- and high-school students. Teams of up to 5 competitors will face a series of increasingly challenging problems, in which they must break, hack, decrypt, reverse engineer or do whatever it takes to find hidden answer strings known as flags. Once a team exploits the security vulnerability purposefully left in the problem material, they can submit the correct flag to receive points and improve their ranking. Challenges will be distributed across the spectrum, for beginners and for experts, and they will feature binary exploitation and reversing, cryptography, and other miscellaneous topics. Prizes totaling over $2,000 will be awarded to the top-ranking teams.
The entire competition will be online at and will last for 3 weeks: April 10–30, 2016.

If you have any questions, please feel free to email us at

Maria Litvin, Phillips Academy, Andover

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