warnings about WebGL pretty seriously. The company has decided not to support the web-based 3D standard because it wouldn't be able to pass security muster. Highest on the list of concerns is that WebGL opens up a direct line from the internet to a system's GPU. To make matters worse, holes and bugs may crop up that are platform or video card specific, turning attempts to plug holes in its defense into a game of whack-a-mole -- with many players of varying reliability. Lastly Microsoft, like security firm Context, has found current solutions for protecting against DoS attacks rather unsatisfying. Lack of support in Internet Explorer won't necessarily kill WebGL and, as it matures, Microsoft may change its tune -- but it's still a pretty big blow for all us of hoping the next edition of Crysis would be browser-based.
Update: As is usually the case Apple and the Windows folks are on opposite sides of this one. In fact, the Cupertino crew plans to bring WebGL to iOS 5 with one very strange restriction -- it will only be available to iAd developers. Now, chances are it will eventually be opened up in mobile Safari for everyone, but for the moment it seems browser-based 3D graphics will be limited to advertisements on the iPhone. Still, that's another big name throwing its support behind the burgeoning standard.