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Homeowner baffled after washing machine uses 3.6GB of internet data a day
(www.newsweek.com)
This is a most excellent place for technology news and articles.
Or ideally just don't put it on the wifi. I just set a timer for when it is done. Even those with variable cycles are fairly predictable and it isn't usually a big deal if your timer is 15min late.
True it is the better option, but putting it on a guest network and adding parental control lowjacks it pretty well. Set it schedule to when you need it.