Are printers "hackable"? Yep.

Who would've thought it? Printers, especially business printers, are getting more and more sophisticated and intelligent, to the point where they are now just like desktops in disguise. When connected to the corporate LAN, they are just a big a target as regular workstations.

eWeek has a nice article: Our Printer Got Hacked?!?! on the subject. Printers are now security risks and you must treat them accordingly.

This is generally not an issue for consumer printers as they are generally attached to a PC's printer or USB ports, not directly tio the LAN. Therefore they are protected by the PC's protection in most cases. If you are going to attack a home PC from the outside, why would you care go to its printer?

If you are in charge of securing your company's LAN, this is an issue you have to look at. It doesn't pay to secure your workstations with IP Addresses and not your printers (which also have IP Addresses).