The next e-book you buy might not exactly match the printed version. And those changes are there to make sure you're not a pirate. The next e-book you buy might not exactly match the printed version. And those changes are there to make sure you're not a pirate. German researchers have created a new DRM feature that changes the text and punctuation of an e-book ever so slightly. Called SiDiM, which
![New DRM Will Change the Words in Your E-Book](https://cdn-ak-scissors.b.st-hatena.com/image/square/55c01b27fff13a1bd56c6c8af2b2a8eebebcef90/height=288;version=1;width=512/https%3A%2F%2Fmedia.wired.com%2Fphotos%2F593328f92a990b06268ad726%2F191%3A100%2Fw_1280%2Cc_limit%2Fkindle_001.jpg)