Pokerstars uses various methods to detect and block VPN usage by players. These methods include: Blacklisting known VPN IP addresses: Pokerstars maintains a list of IP addresses associated with VPN servers. If a player attempts to connect to the website using one of these IP addresses, they will be blocked.

No, it is not illegal to gamble with a VPN. By using a VPN to access gambling sites, you are simply protecting your online traffic from being tracked and ensuring that your personal information is kept secure.