**might not be related to this
Many years ago I used Peerblock too. Seems OK. Then I switched to using the Zonealarm free firewall. Then it took up too much cpu time since it is actively scanning thus my laptop will be using lots of cycle instead of resting during idle time.
So I switched to one free firewall called Glasswire.
As for Halliburton trying to pry into your system, apart from firewall, you could use Opera browser which has a built-in VPN. Or opt for a paid VPN such as BolehVPN or NordVPN.