Remove/Do not install Flash and Java, and make sure that Gatekeeper is at the middle setting. Turn your Firewall on regardless, and/or monitor your network act

Remove/Do not install Flash and Java, and make sure that Gatekeeper is at the middle setting. Turn your Firewall on regardless, and/or monitor your network activity. If you know what a packet is, then Little Snitch, if you don't Radio Silence is what I set my parents up with.