Protect against macro viruses

1. On the Tools menu, click Options.
2. Click the Security tab.
3. Under Macro Security, click Macro Security.
4. Click the Security Level tab, and then select the security level you want to use.

Depending on your macro security setting, when you open a macro, you will receive a warning and the macro may be disabled for installed templates and add-ins (including wizards).

1. On the Tools menu, click Options, and then click the Security tab.
2. Under Macro Security, click Macro Security.
3. Click the Trusted Publishers tab.
4. Clear the Trust all installed add-ins and templates check box.

Note  All templates, add-ins, and macros shipped with Microsoft Office 2003 are digitally signed by Microsoft. After you add Microsoft to your list of trusted sources for one of these installed files, all subsequent interaction with these files will not generate messages.

You digitally sign a file or a macro project by using a digital certificate.

1. If you don't already have a digital certificate, you must obtain one.

   How?

   You can obtain a digital certificate from a commercial certification authority, such as VeriSign, Inc., or from your internal security administrator or Information Technology (IT) professional. Or, you can create a digital signature yourself using the Selfcert.exe tool.

   To learn more about certification authorities that offer services for Microsoft products, see the Microsoft Security Advisor Web site.

   Note  Because a digital certificate you create yourself isn't issued by a formal certification authority, macro projects signed by using such a certificate are referred to as self-signed projects. Depending on how Microsoft Office digital-signature features are being used in your organization, you might be prevented from using such a certificate, and other users might not be able to run self-signed macros for security reasons.

2. Open the file that contains the macro project you want to sign.
3. On the Tools menu, point to Macro, and then click Visual Basic Editor.
4. In the Project Explorer, select the project you want to sign.
5. On the Tools menu, click Digital Signature.
6. Do one of the following:
   • If you haven't previously selected a digital certificate or want to use another one, click Choose, select the certificate, and then click OK twice.
   • To use the current certificate, click OK.

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