Just installed LTSB, how many of these are relevant?
I grabbed them from a W10 thread.
Run ShutUp10, click actions up the top, and apply recommended and somewhat recommended settings.
Use Spybot Antibeacon, make sure not to disable anything you'll actually use
Go to Windows Defender Firewall with Advanced Security > Inbound Rules > New Rule... > Custom > All programs > Protocol tyre: Any > And block ALL of these IP Addresses under Remote IP Addresses:
111.221.64.0-111.221.127.255, 157.55.130.0-157.55.130.255, 157.55.235.0-157.55.235.255, 157.55.236.0-157.55.236.255, 157.55.52.0-157.55.52.255, 157.55.56.0-157.55.56.255, 195.138.255.0-195.138.255.255, 213.199.179.0-213.199.179.255, 64.4.23.0-64.4.23.255, 65.55.223.0-65.55.223.255, 104.96.147.3, 111.221.29.177, 111.221.29.253, 131.253.40.37, 134.170.115.60, 134.170.165.248, 134.170.165.253, 134.170.185.70, 134.170.30.202, 137.116.81.24, 137.117.235.16, 157.55.129.21, 157.55.133.204, 157.55.240.220, 157.56.106.189, 157.56.121.89, 157.56.124.87, 157.56.91.77, 157.56.96.54, 168.63.108.233, 191.232.139.2, 191.232.139.254, 191.232.80.58, 191.232.80.62, 191.237.208.126, 2.22.61.43, 2.22.61.66, 204.79.197.200, 207.46.101.29, 207.46.114.58, 207.46.223.94, 207.68.166.254, 212.30.134.204, 212.30.134.205, 23.102.21.4, 23.218.212.69, 23.223.20.82, 23.57.101.163, 23.57.107.163, 23.57.107.27, 23.99.10.11, 64.4.54.22, 64.4.54.32, 64.4.6.100, 65.39.117.230, 65.52.100.11, 65.52.100.7, 65.52.100.9, 65.52.100.91, 65.52.100.92, 65.52.100.93, 65.52.100.94, 65.52.108.29, 65.52.108.33, 65.55.108.23, 65.55.138.114, 65.55.138.126, 65.55.138.186, 65.55.252.63, 65.55.252.71, 65.55.252.92, 65.55.252.93, 65.55.29.238, 65.55.39.10, 77.67.29.176
Disable everything outlined in this video: youtube.com/watch?v=U9kFXnomRWQ