AVAST offers one of most popular free AV products that had previously been used to track browser history & marketing data on macro basis, as there were some privacy risks expressed.  Going forward in 2020, this practice has now been stopped in favor of improved user privacy.

https://www.pcmag.com/news/avast-to-end-browser-data-harvesting-terminates-jumpshot

Avast will no longer sell users’ browser histories to third-party companies, the antivirus vendor said, following a PCMag-Motherboard investigation into the privacy risks around the data collection.  Late on Wednesday, Avast CEO Ondrej Vlcek announced his company plans to shut down operations at Jumpshot, the subsidiary in charge of selling the browser history data. “As CEO of Avast, I feel personally responsible and I would like to apologize to all concerned,” he said in a statement.  The popular antivirus vendor previously claimed it could “de-identify” people’s personal data from the browser history collection, thus preserving the user’s privacy.