Researchers at Columbia University in New York have discovered a vulnerability in Hewlett-Packard LaserJet printers that could allow attackers to steal sensitive documents, gain control of corporate networks, or even set the affected device on fire. This can be accomplished because some HP LaserJet printers do not validate the origin of remote firmware updates before applying them, Salvatore Stolfo, a professor of computer science at Columbia who directed the research, told SCMagazineUS.com on Tuesday. That means anyone can reprogram the devices with malicious firmware. Everytime an HP LaserJet printer accepts a print job, it checks to see if a firmware upgrade has ...