Wargame (hacking)

In hacking, a wargame (or war game) is a cyber-security challenge and mind sport in which the competitors must exploit or defend a vulnerability in a system or application, or gain or prevent access to a computer system.

A wargame usually involves a capture the flag logic, based on pentesting, semantic URL attacks, knowledge-based authentication, password cracking, reverse engineering of software (mostly JavaScript, Adobe Flash, and assembly language), code injection, SQL injections, cross-site scripting, exploits, IP address spoofing, and other hacking techniques.

...
Wikipedia