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Some of you may have seen this but it is good information.
This is not new but useful.
Windows XP has been found to have a flaw so bone-headed that it renders passwords ineffective as a means of keeping people out of your PC. All administrators of Windows XP machines should immediately take to heart:
* Anyone with a Windows 2000 CD can boot up a Windows XP box and start the Windows 2000 Recovery Console, a troubleshooting program.
* Windows XP then allows the visitor to operate as Administrator without a password, even if the Administrator account has a strong password.
* The visitor can also operate in any of the other user accounts that may be present on the XP machine, even if those accounts have passwords.
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* Unbelievably, the visitor can copy files from the hard disk to a floppy disk or other removable media - something even an Administrator is normally prevented from doing when using the Recovery Console.
This problem is unrelated to a feature of XP that allows an Administrator to set up automatic logon when the Recovery Console is used. Even without the Registry entry that enables this, XP is vulnerable. (For info on that feature, see Microsoft Knowledge Base article 312149.)
Windows 2000, of course, doesn't allow Recovery Console users to access a hard drive without a password, if one previously existed. Microsoft executives were notified of the XP flaw weeks ago, but haven't yet officially responded. There's no Knowledge Base article about it, and there may not even be a good solution to the problem. Microsoft security has a company policy that says, "If a bad guy has unrestricted physical access to your computer, it's not your computer anymore."
That's all well and good - but the fact remains that Windows 2000 doesn't allow anyone with an old CD to get password-free access, and Windows XP does. If you use XP machines in open spaces, put the PCs behind a locked door or put a lock on the PCs themselves.
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