A macro is essentially a custom piece of code embedded in a document or spreadsheet to add functionality. If someone sends you a document with ‘macros enabled’, send the squirrels after them. Seriously. Unless it is a complicated spreadsheet, I can’t think of a reason to enable macros and email a document. If it is a spreadsheet, then share it on an internal company drive.
Contributor: Aaron S. Birnbaum from Seron Security