Insert a picture as a watermark. You can automatically turn a picture or a photo into a watermark that you can use to brand or decorate a document. On the Page Layout tab, in the Page Background group, click Watermark. Click Custom Watermark. Click Picture watermark, and then click Select Picture.
And that first defense, the first one that you want to be able to rely on, is truth. Yes, truth is a valid defense against a claim of Internet defamation. If what you say is true, then you cannot be successfully sued for defamation of character.
One of the key defenses raised by people accused of making defamatory statements is that the statements were privileged. This means that they were made in a context that is generally deserving of protection (for policy reasons), and if the privilege is successfully proven, it will effectively end the defamation claim.