Whether it’s BitLocker on Windows 7 or FileVault on Mac OS X great forensic tools are able to break such security tools! For instance, Passware Kit Forensic 11.3 can decrypt BitLocker and TrueCrypt encrypted hard disks, and Mac OS X integrated utility FileVault. Vulnerabilities in the FileVault utility exist because it stores the key in memory where an attacker can easily get hold of! This forensic tool can also bypasses Mac and Windows login passwords and include a portable version that runs from a USB.
Read more – http://www.sectechno.com/2012/02/03/passware-kit-11-3-tool-to-crack-apple-filevault-encryption/