As governments and copyright holders successfully litigated to block the main domain (thepiratebay.org), operators and third parties created mirror sites.
October 26, 2023 Subject: Operational Overview, Legal Status, and Security Risks of The Pirate Bay and its Proxies piratebays3
Using proxies like "piratebays3" introduces distinct security vulnerabilities beyond the legal issues: 2023 Subject: Operational Overview