Macro and security

A macro in computer science is a rule or pattern that specifies how a certain input sequence (often a sequence of characters) should be mapped to a replacement input sequence (also often a sequence of characters) according to a defined procedure.A macro is used to define variables or procedures, to allow code reuse, or to design domain-specific languages.Macros can be separated into several types: Text substitution macros as in the C language. Macros in software. In some software, a sequence of instructions can be associated to a keyboard or mouse action. Some software can include a programming language (like VBA in Microsoft Office) allowing the control of software features. Other types of macros exist; they aren't covered in this article.Macros can be very useful to software users. They simplify regularly used actions (repetitive code for a programmer, or a sequence of actions in a program) so that the productivity of the user is increased. However, many problems exist, they will be tackled subsequently.