What VPN to avoid?

As a cryptocurrency and finance professional, I often find myself needing to use a VPN for secure transactions and to protect my privacy. However, with so many VPN providers out there, it's important to be cautious and avoid those that may not be trustworthy. So, what VPN should I avoid? Are there any specific providers that have a history of security breaches, slow speeds, or unreliable service? It's crucial to do my research and choose a VPN that offers strong encryption, a no-logs policy, and a reliable network of servers to ensure my transactions and personal information are kept safe.