A month ago I wrote about Avast browser extensions being essentially spyware. While this article only names Avast Online Security and AVG Online Security extensions, the browser extensions Avast SafePrice and AVG SafePrice show the same behavior: they upload detailed browsing profiles of their users to uib.ff.avast.com. The amount of data collected here exceeds by far what would be considered necessary or appropriate even for the security extensions, for the shopping helpers this functionality isn’t justifiable at all.

After I published my article I got the hint to look at Jumpshot, a company acquired by Avast in 2013. And indeed, that suddenly made perfect sense. On their website, Jumpshot praises its “clickstream data” product:

Incredibly detailed clickstream data from 100 million global online shoppers and 20 million global app users. Analyze it however you want: track what users searched for, how they interacted with a particular brand or product, and what they bought. Look into any category, country, or domain.

That sounds exactly like the data that Avast collects from their SafePrice and Online Security users. Yes, you are the product – even if you paid for that antivirus.

Spying on your users is clearly a violation of the terms that both Google and Mozilla make extension developers sign. So yesterday I reported these four extensions to Mozilla and Google. Quite surprisingly, as of today all of these extensions are no longer listed on either Mozilla Add-ons website or Chrome Web Store. That was a rather swift action!

It remains to be seen how this will affect millions of existing extension users. At least Mozilla didn’t add Avast extensions to the blocklist yet, stating that they are still talking to Avast. So the extensions will remain active and keep spying on the users for now. As to Google, I don’t really know where I can see their blocklist, any hints?

https://palant.de/2019/12/03/mozilla-and-google-remove-avast-extensions-from-add-on-stores/