Clean browser:
Depends on how you look at it. We can do what we can do.
To the browser folks it means clearing your history, “ cookies” and trackers which every entity in marketing discloses in the fine print along with your permission to use/sell you info as they wish. It’s very lucrative.
“Clean” depends on how up to date your browser and privacy settings are, and the quality of your secondary protection (malware bytes, Kaspersky, Norton, etc). They’re discovering it’s a deep rabbit hole the data miners erase their detectable presence from…but your footprint is still there and hack able enough that even HIPPA compliant, banking, and government sites are vulnerable.
Marketing companies (and Google) invented data collection, surveillance, analysis and made it one of the biggest moneymakers there is, and it’s gotten so invasive, once you’ve been somewhere…even if you cover/erase your tracks, they still know….and you gave them permission, or you wouldn’t be working for them.