Microsoft Edge: Building a safer browser

We can’t have nice things.  Microsoft and Google Chrome tightening their grip on their browsers in the name of security:

So to make browsers safer against attacks, and just more reliable, it is important to create an extension model that is safer, by sharing less state between the browser itself and the extensions. Thus Microsoft Edge provides no support for VML, VB Script, Toolbars, BHOs, or ActiveX. The need for such extensions is significantly reduced by the rich capabilities of HTML5, and using HTML5 results in sites that are interoperable across browsers.

via Microsoft Edge: Building a safer browser.