"It\ufffds important for me," he said, "that our customers are using the appropriate security solutions for the right situations, whether that\ufffds security functionality integrated in the operating systems, or add-on products."

He went on to add that he was describing a very specific situation where a machine was locked down using the in-built features of Vista, and added that "most users will use some form of antivirus software, and that will be appropriate for their scenarios."