Is it possible to decompile or analyze an extension to see if new code has been added?
I only have 4 extensions, all of them are recommended by Firefox, and come with a tag that says “Firefox only recommends extensions that meet our standards for security and performance”. Now I’m wondering what those standards are; and whether plugins that have already ‘met’ them, are re-assessed when updated or altered.
You can see the code of extensions, but it may be minimized, so it hard to known what the code do.
Extensions with label “Recommended” are pass the manual review of Firefox moderators, so you can trust them more than addons with no this label. However you still should keep in mind that any extension developer may be victim of complex scam attack.
The most probable reason usually is a not enough funding the developers
Developer spend time on maintaining the project but users does not donate them
Scammers offer to developer some integrations that not looks too suspicious and allow them to earn some money
Developer agree offer and after some time scammers enables malware to hack extension users
To minimize the possibility of hijacking addons by scammers, we have to:
conduct background check before install extension
ensure the extension have github with open source code and developer are real person
ensure development are active and developer have high engineering skill, check them respond on feedback and issues
donate the developer if you like the product, to motivate them keep distance of scammers offers
From what I’ve experienced with my extension, every update has to go through a review process. Firefox is pretty fast, chrome takes a few days and edge takes a while (opera hasn’t finished reviewing my first version, so I stopped trying with them).
The only time I failed a review was early on when my build script choked and I submitted an empty file to Chrome (whoops). So I can’t really tell how good those reviews are, but I’m not planning on testing them. I just know that they exist
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