Turbo VPN's Windows client has faced significant privacy issues, including active IP leaks and misconfigured protocols. Owned by Innovative Connecting Pte. Limited in Singapore, it has over 500 million downloads on Android. Initial testing revealed that version 3.6.0.0 did not resolve IPv6 address leaks, despite IPv4 addresses being masked. A subsequent update, version 3.7.0.0, successfully blocked unencrypted IPv6 traffic while maintaining IPv4 masking. Testing showed that the proprietary protocol Lepus functions differently from standard VPNs, routing non-browser data through a local proxy without encryption. Turbo VPN's response indicated that the observed issues were limited to specific network configurations, and they have since implemented improvements in the latest version. However, detailed information about their proprietary protocols remains unavailable.