I could use some networking help/advice:

despite being out of town for over a week this month, comcast is telling me we've gone over our data allotment and used 1.5TB this month. According to them, our typical month uses about 600GB

I've changed our wifi passwords, but I suspect that one of our internet-connected devices (air conditioner, robot vacuum & litter box, that sort of thing) has been compromised, and I’d like to try and figure out what's using bandwidth without having to disconnect things in a trial & error manner, but I'm unsure how to go about this

I've got a 7-year old wifi router I've been meaning to replace, and I've been thinking about replacing it; I'd like to be able to see about how much bandwidth each device is using over a time period. How would I go about this?

EDIT: I should note that our TV is a twelve-year old plasma thing that doesn't run apps or even have a network interface. Connected to it is a ten-year old AppleTV box running the latest tvOS. I'm not worried about this.

I found a device/bandwidth breakdown in some obscure page of the router's admin interface

the dishwasher's used 700+GB in the last howeverlong, my laptop using 43GB in the same time period

my partner got this dishwasher a few years ago after reading many reviews; I've never liked it much but I liked it even less after discovering you had to use the app – via the internet – to do a rinse cycle or a self-clean

I'm not sure how it could have become compromised; we keep all our stuff up-to-date, I don't let untrusted stuff on the network, and the only android device we have is an MP3 player / e-reader for the kid for which you can only install apps via sideloading APKs via miniSD

Then again, it's a dishwasher company writing software in the age of vibecoding, so who knows, maybe it self-compromised

@mattly "Why do you keep a gun in the kitchen drawer?"

"If the dishwasher ever starts sending packets I don't recognize..."

@targetdrone I lol'd, but as a parent the lack of gun safety horrifies me