An IT pro checking why his parents’ Wi-Fi crawled to a halt found the culprit was their coffee maker. Not a laptop, not a phone the Keurig.
On October 6, 2026, Nomad (@NomadsGalaxy), a Technical Field & Community Specialist at Prusa with more than a decade in IT, posted a UniFi network screenshot. The device labeled Keurig-20CE2A28C5CE had racked up 1,008.45 GB of outbound traffic and 9.94 GB downloaded over 10 days and 9 hours. That’s roughly 97 GB a day, or a steady 9 Mbps upstream enough to saturate one of their Wi-Fi access points and slow the whole house.
His reaction was immediate:
“Hey uh, @Keurig – what the hell is a COFFEE MACHINE uploading, let me double check… ONE FUCKING TERABYTE OF DATA IN 10 DAYS!?!? Immediately unplugging that. Getting my parents a new coffee machine.”
The machine was a Keurig K-Supreme SMART with BrewID. It connects over 2.4 GHz Wi-Fi for remote brewing, scheduling, voice control via Alexa or Google Home, and pod recognition. Normal traffic for those features is tiny power state, brew status, pod ID, occasional firmware checks. Nothing close to a terabyte.
Follow-up posts clarified the key detail.
“I looked further into this, it did broadcast 1TB of data, but most of that didn’t escape my network. This is likely a bug with this unit. It did saturate my AP, that sucked,”
Nomad wrote. A reboot and move to a segregated VLAN stopped the flood. He saw no evidence of data leaving for the internet, no ISP overages, and no signs of malware or botnets.
“Whatever the issue was, was fixed with a reboot. Anything more nefarious would have come back as soon as it saw a path to internet. It’s likely this was a bug in their network stack.”
The episode is a clean reminder that Internet of Things gadgets can still break networks even when traffic stays local. Practical steps help: put smart appliances on a guest network or VLAN, check router stats for odd volume, apply firmware updates when available, and unplug anything that misbehaves. The coffee maker still works offline.
The network logs and Nomad’s consistent account make the anomaly credible. The idea that the machine secretly uploaded a terabyte of personal data to the internet does not hold up. One unit glitched, flooded the local airwaves, and got unplugged. End of story for now.
