Could you please explain to me how a question about an extension, used for tampering data by many of security experts, is not related to a QA site on Information Security?
Could you please explain me... how a question about an extension, used for tampering data by many of security experts, is not related to a QA site on Information Security.
If that question has to do about the security aspects of the extension, then it would be on-topic. However, if the question is only about installing it - or why it doesn't function after installation - that's a simpler software support question, and not on-topic.
This is touched on by the 'What topics can I ask about here?' page when it says "Questions on setting up your home PC antivirus may be more appropriate at superuser.com..." Software installation is a generic layer that doesn't touch on the Security aspects of the tool.
Also on that page it states that this site is "to discuss protecting assets from threats and vulnerabilities". If you were asking how to use 'Tamper Data' when Penetration Testing, for example, that would be on-topic.
I don't know which issue from "Firefox not so long ago" you're referring to, but searching showed me this page, which is a perfect example of why installation questions are better directed at the product forum - the answer there was more detailed and cogent than I'd expect from this site for such a question.