Mozilla this week decreed that future web-facing features of Firefox must meet an under-development standard that requires all browser-to-server-and-back traffic be encrypted.

“Effective immediately, all new features that are web-exposed are to be restricted to secure contexts,” wrote Mozilla engineer Anne van Kesteren in a post to a company blog. “A feature can be anything from an extension of an existing IDL-defined object, a new CSS property, a new HTTP response header, to bigger features such as WebVR.”

Secure contexts, dubbed a “minimum security level,” is a pending standard of the W3 (World Wide Web Consortium), the primary standards body for the web. Secure contexts’ main purpose, according to its documentation: “Application code with access to sensitive or private data be delivered confidentially over authenticated channels that guarantee data integrity.”

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