The hackers went on to send them documents laced with malicious code that was designed to gain access to their computers.

Pupils will study malicious code, weak passwords, how criminals manipulate people to reveal data, and outdated software.

Malicious code also includes spyware, which are deceptive programs, installed without authorization, that monitor a consumers activities without their consent.

Hardware-set permission levels make it much more difficult for malicious code to take control of the system.

This prevents malicious code from being inserted into an existing package, and so gaining access to package-scoped classes and data.