An anonymous reader writes "Last year the W3C approved the inclusion of DRM in future HTML revisions. It's called Encrypted Media Extensions, and it was not well received by the web community. Nevertheless, it had the support of several major browser makers, and now Mozilla CTO Andreas Gal has a post explaining how Firefox will be implementing EME. He says, 'This is a difficult and uncomfortable step for us given our vision of a completely open Web, but it also gives us the opportunity to actually shape the DRM space and be an advocate for our users and their rights in this debate. ... From the security perspective, for Mozilla it is essential that all code in the browser is open so that users and security researchers can see and audit the code. DRM systems explicitly rely on the source code not being available. In addition, DRM systems also often have unfavorable privacy properties. ... Firefox does not load this module directly. Instead, we wrap it into an open-source sandbox. In our implementation, the CDM will have no access to the user's hard drive or the network. Instead, the sandbox will provide the CDM only with communication mechanism with Firefox for receiving encrypted data and for displaying the results.'"