Capture the Flag (CTF) is a popular computer security competition where participants, called "red teams," attempt to breach the defenses of a network or system, while the opposing "blue team" aims to protect it. In this challenge, teams engage in a simulated battle to capture sensitive information, such as flags, which are hidden within the target network. CTFs assess skills in areas like hacking, coding, cryptography, and cybersecurity. These events are a great way for security enthusiasts and professionals to improve their skills and learn from each other.