Security Concerns
Like any common programming language, VBA macros can be created with malicious intent. Using VBA, most of the security features lie in the hands of the user, not the author. The VBA host application options are accessible to the user. The user who runs any document containing VBA macros can preset the software with user preferences. End-users can protect themselves from attack by disabling macros from running in an application, or only grant permission for a document to run VBA code if they are sure the source of the document can be trusted.
Read more about this topic: Visual Basic For Applications
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