
Mozilla and Opera later removed the extensions. In the process, it will transmit data that allows reconstructing your entire web browsing history and much of your browsing behaviour. Wladimir wrote that the four were spying on its allegedly 400 million users by collecting data that “exceeds by far what would be considered necessary or appropriate even for the security extensions.” When Avast Online Security extension is active, it will request information about your visited websites from an Avast server. It is worth noting that Avast is a cybersecurity company and AVG is its subsidiary and both offer the same extensions, Avast Online Security, AVG Online Security, Avast SafePrice and AVG SafePrice.

They have since been removed from the Chrome Web Store by Google.


Wladimir Palant, the creator of Adblock Plus recently wrote how four extensions from Avast and AVG uploaded detailed browsing profiles of their users.
