Protect your WORD documents

【Introduction】
Documents are also security issues, especially for Office documents, in order to make your documents more secure, Office provides a more comprehensive security and document protection features, including: security level, digital signature, password settings, forms, password protection and endorsement.

The level of security documents

Word document of the biggest security risk is a macro virus Word macro virus in order to prevent the establishment of a security level of the concept. You can "Tools → Options →" Security "tab → Macro Security" and "Security Level" tab to set the security level is divided into high, medium and low gear. Will only run the high-level macro reliable source, other macro must be abolished; in a macro-level in the open, you will see a warning, allowing you to choose whether to enable; low level of protection is not the macro. When choosing a high-level, has been installed templates and add-ins (including the Wizard) in the macros may be disabled. You only in the "Tools → Options → Security → Macro Security", click the "reliable sources" tab, then click the "Trust all installed add-ins and templates" check box to allow the installation of the macro does not is disabled. Note: All templates with the Microsoft Office XP, add-ins and macros have been a Microsoft digital signature. Once these files have been installed in an installation to your list of trusted sources, and then interact with these documents will no longer generate messages.

The protection of digital certificates

The source of many documents are not available, so security can not be guaranteed. Office digital certificate to confirm through reliable sources. Through digital certificates to digitally sign files or macros. In general, the digital certificate is from a commercial certification authority and internal security administrator or information technology professionals obtain the. Ordinary users can use Selfcert.exe tools to create digital signatures in person (due with Selfcert.exe create your own digital certificate is not issued by a formal certification authority, the use of this certificate program will add a signature to the macro is considered to be self-signed programs, so that other users may not be able to run self-signed macros). Macros with digital signature certificate is simple: Open the program that contains the macro you want to sign a document, in the "Tools → Macro → Visual Basic Editor → Project Explorer", select the program you want to sign. Then click on "Tools → Digital Signature" command.

Tip:

1. Must be confirmed after completion of the macro test to sign the macro because the macro programs that have been signed a change of code, its digital signature will be deleted. If you are self-signed certificate, then save each time the macro program will automatically re-signed.

2. If you want to prevent users from accidentally modify the macro program which led to the signature failure, before the issue of locking in the macro program. Your digital signature can only show you that the program is safe, does not prove that you write the program. Therefore, the macro program can not be locked to prevent other users to another sign to replace your digital signature.

3. If you create a macro program can add the code to add, then the code should determine the following: If the program has been digitally signed, before continuing to run and whether to notify the user to modify the signature program of the results.

Set the password file

Word document password consists of two: change the user password and the Password to open. Password to open Word documents become read-only file so, if you open the document and make changes to them, only the file name to save the other document. And modify the permissions allow the user to freely modify the password is saved. The setting method: Open the file in the "Tools → Options → Security" tab, set the password.

Tip: To create a long password, click "Advanced" and select RC4 encryption type.

Prevent users to change the form

Because some documents need to be protected form so that others can only enter information in the designated area. So Office provides a form protection. Protection using the form, the form in the domain of any information will be reset. Specific methods: "Tools → Forms → Protect Document." To assign a password to the form in order to know the password to unprotect and modify the form, in the "password (not required)" box, type the password. Do not know the password can still enter information in the form fields. If you want to protect the entire form, click "OK" button. To protect only part of the form, those parts must be in a different section, click the "Festival", and then clear the check box section does not require protection.

Add comment password

Comments in the review is very important, Office in the "Tools → Protect Document" in the protection of annotation. You simply select the object to be protected, type the password to "password" box, you can achieve protection