Ways to bypass disk encryption

Researchers from Princeton University found that after you turn off your PC the data will remain in the computer's memory for some time. Yes, the data remain in the DRAM chip and the only thing you have to do is to extract the chip! If you cold the chip then the data will remain for a longer period of time. I always thought that the data disappeared from the Dynamic RAM, and I am sure that I am not the only one.

You can read the paper Lest We Remember: Cold Boot Attacks on Encryption Keys and find out how to identify and reconstruct some encryption keys like the RSA,AES,DES etc, see the vulnerability of BitLocker (Windows Vista), FileVault (MacOS X) and dm-crypt (Linux) to such attacks and many other useful information.

They also created some videos but all their links are broken.

Here is the link of one of the reseachers :http://www.freedom-to-tinker.com/?p=1257

And the paper Physical Tamper Resistance