1.Change default passwords on home WiFi routers etc
Weak, insecure passwords make it easy for people to access your WiFi. And there will be a lot more people looking round for WiFi to use with all this home working.
2.Use different, strong passwords on every account and device.
This will severely limit hackers ability to access multiple accounts.
3.Update all your devices, applications and operating systems and keep them up to date .
They share a network with your work devices and so pose a threat if not sufficiently protected (and frankly you should do it to protect yourself anyway).