it depends on how the network are configured and if you have physial access to it.
The scary thing is that such products allways has a latency period before it hits the marked.
You can say the same ting for Microsoft efs encryption...
In all MOC curriculum, technet and security talks, ms talks about the need to enable efs to secure your documents...
But the problem is that efs are not secure, it leaks...
Actually you have an efs decrytion tool that enables you to decrypt efs at win boxes, even if syskey are enabled.
http://www.elcomsoft.com/aefsdr.html
There are a few restrictions on the product, but how many have them enabled. Only the few who actually have red the
Microsoft Security Resource Kit
Advanced EFS Data Recovery (or simply AEFSDR) is a program to recover (decrypt) files encrypted on NTFS (EFS) partitions created in Windows 2000, Windows XP and Windows Server 2003. Files are being decrypted even in a case when the system is not bootable and so you cannot log on, and/or some encryption keys have been tampered. Besides, decryption is possible even when Windows is protected using SYSKEY. AEFSDR effectively (and instantly) decrypts the files protected under all versions Windows Server 2003 (Standard and Enterprise), Windows XP (including Service Pack 1) and Windows 2000 (including Service Packs 1, 2, 3 and 4).