First, both the website and your ISP probably know that you’re using a VPN, and they also know the time and session length of your visit. Second, your actual activity on those sites can easily reveal your identity, since there are cookies on your local system, and if you log in to any accounts then obviously the target site knows who you are.
Tag: #vpn
WIRED: A ‘Bulletproof’ Criminal VPN Was Taken Down in a Global Sting
WIRED: A ‘Bulletproof’ Criminal VPN Was Taken Down in a Global Sting. https://www.wired.com/story/security-news-bulletproof-criminal-vpn-taken-down
VPN with ‘strict no-logs policy’ exposed millions of user log files including account passwords | BetaNews
https://betanews.com/2020/07/15/ufo-vpn-data-leak/