Accountants often need to print financial statements with the words “CONFIDENTIAL” or “DRAFT” appearing in light type in the background.

a. Create a watermark with the word “CONFIDENTIAL” in a Word document. Print out a document that displays that watermark.

b. Create the same watermark in Excel and print out a spreadsheet page that displays that watermark.

c. Can you make your watermark “invisible” so that it can be used to detect whether a document containing sensitive information has been copied to an unauthorized location? How? How could you use that “invisible” watermark to detect violation of copying policy?