Tuesday, September 4, 2007

131. Security Tip: Clear Page File

Some programs can temporarily store unencrypted passwords and other sensitive information
in memory. By clearing the Windows paging file (stored in hard disk as Pagefile.sys), we can
prevent any unsecured data from being contained after the shutdown process is complete.
This tip will enhance the security but will slow down the shutdown process by another 5 to 8
seconds. If you do not want to compromise on security, follow the tip.

Open Control PanelSelect Administrative ToolsChoose Local Security PolicyLocal
Policies. Now Click on Security Options. In the right hand menu, right click on Shutdown:
Clear Virtual Memory Pagefile and Select Enable. Reboot the machine. Now for the guys,
who love to edit the registry for this setting, navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\
MemoryManagement. Double click on ClearPageFileAtShutdown and Set Value = 1.Click
OK and Reboot

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