A raft of bugs in six popular models can allow a hacker to wreak havoc on a corporate network. The bugs will be presented by NCC Group at a DEF CON session entitled Why You Should Fear Your Mundane Office Equipment on Saturday. They vary in severity but the potential impact ranges from denial-of-service attacks that could cause printers to crash, spying on every print job sent and sending print jobs through to unauthorized parties. There s also the possibility of installing backdoors to maintain a hidden presence on the network.
Source: https://threatpost.com/office-printers-hackers-open-door/147083/