A PACTF event.
Official URL: https://pactf.com/
This event participation is restricted to high-school teams only! No global rating points.Event organizers
PACTF is an online computer security competition primarily for high school students, organized and run by students at Phillips Academy in Andover, MA, U.S.A. PACTF will run from April 16–April 30. There will be three rounds, each one week long. During each round, you can pick any two-day span to solve as many problems as you can! Rounds will feature binary exploitation and reversing, cryptography, and other miscellaneous topics, with introductory and advanced problems in each category.
Just starting but there is a lot of guessing already and no categories for challenges.