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Special Edition Using Microsoft® Office XP by Woody Leonhard, Ed Bott

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Macro Security

Macros can save time and energy, but an ill-conceived macro can (intentionally or unintentionally) destroy data and otherwise wreak havoc on your system or network. For example, a macro that automates file management tasks by deleting old files could inadvertently wipe out a whole folder full of files if you don't define its parameters carefully.

You can have a high degree of confidence in macros you write yourself, but you should never trust a macro you receive from someone you've never met. Thousands of macro viruses exist, and you run the risk of encountering one of them every time you open a document, workbook, presentation, or Access database.

What is a macro virus, and how likely are you to encounter one? Here are some simple ...

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