The copyright protection on Amazon's Kindle electronic reader has been breached by a hacker. This Israeli hacker claimed that he has broken Kindle's copyright protection which allows e-books to work with other devices.

He claims that the e-books stored on the device, with this hack, can now be transferred in pdf format to any other device.

Labba, the hacker, accepted the open challenge on hacking. org, which is the Israeli hacking forum, and just in a week, he had a program ready for the challenge posted.

E-books stored on Kindle, originally, in its main proprietary format .azw, cannot be transferred to other devices.

The rights holders regard DRM as a crucial tool to protect copyright, consumers tend to hate it because it limits what can be done with content.

Jon Lech Johansen, known as DVD Jon, cracked the copy protection on DVDs in 1999.

Amazon representatives are still not sure of what steps should be taken in this regard.