Final answer:
A Trojan horse is the type of malware that was activated.
Step-by-step explanation:
The type of malware that was activated is a Trojan horse.
A Trojan horse is a type of malware that disguises itself as a legitimate file or program. When the user opens the file it can perform malicious actions like copying files to unsecure areas of the computer without the user knowledge or consent.
Unlike worms, which can spread on their own, Trojan horses rely on users to inadvertently execute them or open infected files.