Hands Off! 4.0.0 -

: It tracks both inbound and outbound network connections to prevent applications from "phoning home".

Since the tool is no longer actively maintained, you might consider these current industry standards for Mac security: Hands Off! 4.0.0

Historically, Hands Off! was designed to give users granular control over their privacy by monitoring and blocking unauthorized activities. : It tracks both inbound and outbound network

HandsOff an Ultimate Firewall for your Mac | Lucideus Research Hands Off! 4.0.0