To eliminate both of these backdoors, follow these steps:
1. Open the Registry Editor (discussed in Chapter 3).
2. Expand the branches to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon. (Note the Windows NT branch here,
as opposed to the more common Windows branch.)
3. Create a new string value here by going to Edit ??? New ??? String Value,
and name the new value IgnoreShiftOverride. Double-click the new
value, type 1 for its value data, and click OK. (This disables the Shift
key during the automatic login.)
4. Next, create a new DWORD value in this same key by going to Edit ???
New ??? DWORD (32-bit) Value, and name the new value
ForceAutoLogon. Double-click the new value, type 1 for its value data, and
click OK. (This automatically logs back in if the user tries to log out.)
5. Close the Registry Editor when you??™re done. The change will take effect
immediately.
To remove either or both of these restrictions, just delete the corresponding
Registry values.
Limit automatic logins
It??™s possible to limit the automatic login feature, so that the Log On dialog
(or Welcome screen) reappears after a specified number of boots:
1. Open the Registry Editor (discussed in Chapter 3).
2. Expand the branches to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon. (Note the Windows NT branch here,
as opposed to the more common Windows branch.)
3. Create a new DWORD value here by going to Edit ??? New ??? DWORD
(32-bit) Value, and type AutoLogonCount for the name of the new value.
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