Which type of virus is usually targeted at Microsoft Office products?

• A. Macro virus
• B. Boot sector virus
• C. Polymorphic virus
• D. Worm

Answer: (A)

Macro viruses exploit the built‑in scripting capability of Office apps (VBA) to run code when a document is opened. Attackers embed malicious macros in Word or Excel files, so when a user opens a document that enables macros, the code executes automatically, often spreading via email attachments or shared files. This makes them a natural fit for Microsoft Office products, since Word, Excel, and other Office programs support macros and can be configured to auto-run code.

Boot sector viruses target the boot process on disks, not Office documents. Polymorphic viruses describe a technique to change their code to evade detection, not a specific target. Worms propagate across networks and don’t rely on Office documents as their primary vector.