Whenever you want to access such document you will get the error that the document is read only and cannot be edited at all.
Unauthorized access is another issue which is avoided by applying password to the document. There are at times sensitive data which has been written over the word document and therefore a password is necessary to protect it. Part 1: How to Edit a Protected Word Document Part 2: Advantages of PDF Format Part 3: How to Edit a Protected PDF Document How to Edit a Protected Word Document Why password protection is required?
