Would you plug in a USB stick that came in your mailbox? Australian police have issued a warning that unknown people are mailing out USB sticks that are loaded with malware.

Australian state police are warning that if a victim plugs in the USB device it could lead to "fraudulent media streaming service offers, as well as other serious issues."

There was a study done in October of 2015 that showed that 17% of users would have no second thoughts about plugging in a USB drive that they found on the street.

A second study, made by a security researcher who left 300 USB sticks on the streets of the University of Illinois Urbana-Champaign campus, found that 98 of the sticks were picked up. Of that, 48% were plugged into computers.

This is alarming news given that just last month a Hong Kong company started selling USB devices that when plugged into a system, short circuits any computer.

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