Avast’s AntiTrack promised to protect your privacy. Instead, it opened you to miscreant-in-the-middle snooping
Network researcher David Eade reported that Avve CVE-2020-8987 is a combined trio of bugs that are used by spies to capture and manipulate AntiTrack user connections, even on the most secure websites.
https://www.theregister.co.uk/2020/03/10/avast_mitm_antitrack_bug/