Security Basics mailing list archives
Re: How to Test HDD Encryption
From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Tue, 13 Nov 2007 20:14:59 +0100
On 2007-11-13 jfvanmeter () comcast net wrote:
encrypting file can be based on the user's password or a certificate, this adds an addational layer of security after the OS is load.
No, it doesn't. If your OS can enforce access controls for certificates it can enforce access controls for files and folders just as well so you wouldn't need encryption in the first place. Plus, if your OS isn't encrypted while the computer is not running an attacker could tamper with it by booting from some other medium. That way he could install e.g. a keylogger, which would make passwords for encrypted files utterly pointless. So all in all file-level encryption does *not* add to the system's security, but only to the system's complexity. And on top of that it doesn't even protect you from attack vectors that FDE (or partition encryption) will very well protect you from. Regards Ansgar Wiechers -- "All vulnerabilities deserve a public fear period prior to patches becoming available." --Jason Coombs on Bugtraq
Current thread:
- How to Test HDD Encryption infosecofficer (Nov 13)
- RE: How to Test HDD Encryption Deepak J. Mathew (Nov 13)
- Re: How to Test HDD Encryption Ali, Saqib (Nov 13)
- Re: How to Test HDD Encryption Alexander Klimov (Nov 13)
- <Possible follow-ups>
- Re: How to Test HDD Encryption jfvanmeter (Nov 13)
- RE: How to Test HDD Encryption Eric White (Nov 13)
- Re: RE: How to Test HDD Encryption anymouse (Nov 13)
- RE: RE: How to Test HDD Encryption Craig Wright (Nov 13)
- RE: How to Test HDD Encryption jfvanmeter (Nov 13)
- RE: How to Test HDD Encryption Eric White (Nov 13)
- Re: How to Test HDD Encryption Ansgar -59cobalt- Wiechers (Nov 13)
- RE: How to Test HDD Encryption jfvanmeter (Nov 13)
- Re: How to Test HDD Encryption Ansgar -59cobalt- Wiechers (Nov 13)
- RE: How to Test HDD Encryption Eric White (Nov 13)
- Re: RE: How to Test HDD Encryption jim . lehman (Nov 13)
- Re: RE: How to Test HDD Encryption Ansgar -59cobalt- Wiechers (Nov 13)
- FDE and integrity of OS Was: How to Test HDD Encryption Alexander Klimov (Nov 14)
- Re: FDE and integrity of OS Was: How to Test HDD Encryption Mike Hale (Nov 14)
- RE: FDE and integrity of OS Was: How to Test HDD Encryption Craig Wright (Nov 14)
- Re: FDE and integrity of OS Was: How to Test HDD Encryption Ansgar -59cobalt- Wiechers (Nov 14)
- Re: RE: How to Test HDD Encryption Ansgar -59cobalt- Wiechers (Nov 13)