Today we won’t find Avast and AVG extensions in search results, they just stopped working and links to them. Avast Online Security, AVG Online Security and two versions of SafePrice have also disappeared. In general, the data is not necessary for the operation of extensions, but it is very well suited for identifying Internet users and profiling ads.

https://securityaffairs.co/wordpress/94703/digital-id/mozilla-avast-avg-extensions-removed.html