WebGL is a technology that allows web browsers to display 3D graphics, and 3D is all the rage these days (although, based on consumer uptake on 3D televisions so far, maybe not quite as much so as vendors of 3D products would like to believe). Most of the popular web browsers either support WebGL now or plan to do so in the future. Microsoft, however, doesn’t support it in Internet Explorer and, perhaps more surprising, has no plans to do so in future versions. Why? Security concerns. And at least some tech industry experts think Microsoft is right.
Read more here:
http://www.zdnet.com/blog/hardware/microsoft-is-right-to-label-webgl-harmful/13354?tag=nl.e589