Although not as prevalent as they once were (Microsoft has made leaps towards the prevention of Macro viruses), they are still a threat for those who don’t take security seriously or simply don’t understand it. Macros are small programs that are native to Microsoft Office applications (Word (.doc/x), Excel (.xls/x), Access (.mdb/x they are designed to save time and to allow developers to create interactive databases, spreadsheets, and documents and automate tasks. However if they fall in the wrong hands they can be designed to delete and corrupt important data files and their effects can cost a lot time and money.