Hacking Canon Pixma Printers - Doomed Encryption

This blog post is another in the series demonstrating current insecurities in devices categorised as the ‘Internet of Things’.  This instalment will reveal how the firmware on Canon Pixma printers (used in the home and by SMEs) can be modified from the Internet to run custom code.  Canon Pixma wireless printers have a web interface that shows information about the printer, for example the ink levels, which allows for test pages to be printed and for the firmware to be checked for updates. This interface does not require user authentication allowing anyone to connect to the interface.

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