Which virus type uses multiple methods to infect files?

The multi-partite virus is characterized by its ability to use multiple infection methods. This type of virus can infect both the files on a disk and the boot sector, meaning it has both a parasitic component and a boot sector component. This versatility allows it to spread in different ways, making it more effective and harder to eradicate.

Infections by multi-partite viruses can occur through various paths, for instance, they might first infect a program that is executed, and then simultaneously modify the boot sector of the storage device. This dual method of infection can make them particularly challenging for traditional antivirus software to detect and remove.

Understanding the behavior of a multi-partite virus in the context of these various infection strategies highlights the complexities involved in malware management. Knowing that such viruses can utilize different vectors for attack emphasizes the need for comprehensive security measures in protecting information systems.