Well, I don't have any IoT devices, and I don't own a smartphone so I can't use 2-step authentication...so those security options are not for me. But thanks for your tips, I'm sure they'll help others. There are other things in that article that one can do, some of which depend on your type of router/modem, and what options may be provided by the ISP. I have the default Pace gateway provided by Sonic for ADSL. Since I am still waiting for a dial tone before I can connect via Sonic, I am not able to look into these other options myself, at the moment. The author doesn't speak very well for these router/modem combos (gateways):
"Most gateway routers used by home customers are profoundly not secure, and some routers are so vulnerable to attack that they should be thrown out, a security expert said at the HOPE X hacker conference in New York."