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