I've been reading a lot about how network printers can be a big security breach, but precious little about what to do about it. I have 2 Canon printers, a Pro-100 and a MG6821. Neither one requires the network password when you set them up on the network, so I assume they're doing some sort of WPS business.
Over 18 months ago there was this thread How dangerous is an unsecured printer? that seems to say they're very dangerous but, again, not much as far as what to do about it.
Has anything changed since then? Can someone tell me how to secure them?