"Hacking printers exploiting Cross-site printing (XSP) attacks"

Researchers at University Alliance Ruhr have discovered security vulnerabilities within 20 different printer models, which could be exploited by hackers to steal sensitive information and disable hardware devices. These security vulnerabilities are exploited through common laser printing languages, PostScript and PJL. This article discusses tools an attacker may use to exploit these vulnerabilities as well as other harmful effects of these attacks. 

http://www.cyberdefensemagazine.com/hacking-printers-exploiting-cross-site-printing-xsp-attacks/