I don't use a firewall apart from router, but if you set a firewall in all of your devices, the chances of one of them getting infected and spreading it to the others via LAN would be low theoretically.
I don't use a firewall apart from router, but if you set a firewall in all of your devices, the chances of one of them getting infected and spreading it to the others via LAN would be low theoretically.
Cold solder is what happens when the solder didn't quite reach the temperature needed to completely melt and do contact, so it looks brittle and would be potentially a faulty connection.
With that said I couldn't spot it in the pic