The phrase Office macros is a harmless-sounding, low-tech name that refers, in real life, to program code you can squirrel away inside Office files so that the code travels along with the text of a document, or the formulas of a spreadsheet, or the slides in a presentation… …and even though the code is hidden from sight in the file, it can nevertheless sneakily spring into life as soon as you use the file in any way. Those hidden macros, indeed, can be configured (by the sender, not by the recipient, you understand!) to trigger automatically when the file is opened; to override standard items in Office’s own menu bar; to run secondary programs; to create network connections; and much more.

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