> sneaking extensions into updates that users didn't opt for. If you have auto-updates enabled, Mozilla, like Google, has complete control over the source code

> sneaking extensions into updates that users didn't opt for. If you have auto-updates enabled, Mozilla, like Google, has complete control over the source code that runs on your system. Had they wanted to sneak new source code in, they would have specifically not packaged it as an extension, which made it user-visible and limited to the extension API in its capabilities, and instead just patched the Firefox code to include it. So, they were decidedly doing the opposite of sneaking it in.