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The YouTuber demonstrated the hacking of the DRM system of HP printers.
Information about a new method of bypassing the protection of HP printer cartridges has appeared on the network. The company has long been criticized for its anti-consumer policies, forcing users to buy only branded supplies and subscribe to HP cartridges.
YouTuber Jay Sammet demonstrated how you can fool the protection system against the use of third-party cartridges. The method consists in the use of a special sticker with a printed circuit and a soldered microchip, which is placed on the contact pads of the cartridge.
The sticker acts like a flexible circuit board, redirecting electrical signals to a separate chip located between the printer and the cartridge. In fact, there is a man-in-the-middle attack.
Sammet suggests that an additional chip tells the printer that there is enough ink in the cartridge and confirms its authenticity. At the same time, the protection system still relies on the original cartridge chip, but an additional device intercepts the response and adjusts the ink level information.
Thus, an already used and refilled cartridge continues to be identified as containing ink due to a modification of the cartridge chip response. The printer recognizes it as a previously used Original HP cartridge with the correct ink level assessment.
This method allows users to refill cartridges with inexpensive ink. However, HP has previously warned that printers using unofficial cartridges may be blocked by Dynamic Security.
Source
Information about a new method of bypassing the protection of HP printer cartridges has appeared on the network. The company has long been criticized for its anti-consumer policies, forcing users to buy only branded supplies and subscribe to HP cartridges.
YouTuber Jay Sammet demonstrated how you can fool the protection system against the use of third-party cartridges. The method consists in the use of a special sticker with a printed circuit and a soldered microchip, which is placed on the contact pads of the cartridge.
The sticker acts like a flexible circuit board, redirecting electrical signals to a separate chip located between the printer and the cartridge. In fact, there is a man-in-the-middle attack.
Sammet suggests that an additional chip tells the printer that there is enough ink in the cartridge and confirms its authenticity. At the same time, the protection system still relies on the original cartridge chip, but an additional device intercepts the response and adjusts the ink level information.
Thus, an already used and refilled cartridge continues to be identified as containing ink due to a modification of the cartridge chip response. The printer recognizes it as a previously used Original HP cartridge with the correct ink level assessment.
This method allows users to refill cartridges with inexpensive ink. However, HP has previously warned that printers using unofficial cartridges may be blocked by Dynamic Security.
Source
