For over an hour today, the Microsoft website was brought offline. Reports indicate that it was a standard Denial of Service attack, rather than an exploit in their hosting platform itself (Windows Server 2003, at last check). However, there is a certain likelyhood that the launch-points for this attack were themselves exploited Windows-based computers. The Department of Homeland Security today issued an unprecedented second warning regaring recent Windows exploits. Is this an isolated incident, or is it an ominous indication of pending cyber attacks on popular internet sites?