Proofpoint said it detected the attacks between December 23 and June 6 when waves of emails, 100,000 at a time, three times a day, started pouring out of more than 100,000 everyday consumer gadgets. More than 25% were sent by devices that were not laptops, desktop computers, tablets or smartphones.
The gadgets included routers, televisions, multi-media centers and at least one refrigerator that were connected to the Internet.
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