• Boot sector viruses specifically target the boot sector or MBR to execute upon startup.
• Boot Sector Virus - A virus that infects the boot sector of storage devices, loading into memory during the boot process and potentially preventing the system from starting.
• Macro Virus - A virus written in a macro language that infects documents and spreads when the infected document is opened
• Resident Virus - A virus that embeds itself in the computer's memory, allowing it to infect other files even after the original host program has ended
• Direct Action Virus - A non-resident virus that executes and infects files immediately upon activation but does not remain in the system's memory.