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What are macros?

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Microsoft Office files can contain embedded code (known as a macro) written in the Visual Basic for Applications (VBA) programming language.

A macro can contain a series of commands that can be coded or recorded, and replayed at a later time to automate repetitive tasks. Macros are powerful tools that can be easily created by novice users to greatly improve their productivity. However, an adversary can also create macros to perform a variety of malicious activities, such as assisting in the compromise of workstations in order to exfiltrate or deny access to sensitive information.