Last month, Researchers from Columbia University's Computer Science Department said they'd found a way to reverse engineer the Remote Firmware Update function in HP LaserJet printers and trick the printers into accepting and installing malware-filled updates. From there, researchers said, an attacker could compromise PCs on corporate networks and use them to send a barrage of instructions to a LaserJet printer, thereby causing its ink-drying element to heat up -- and potentially ignite printer paper.

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