Registry too has permissions:
As strange as it might sound, Registry too has permissions. You can create a new key and more keys and name-value pairs in the registry to your benefit. Although it is not the best place to hide secrets, there are no limits to innovations! Remember though that you should not use this feature to alter permissions on any key you like. It may cost you a complete system reinstall! But you can surely keep treasured some of your little nifty secrets somewhere deep down the registry and lock it so that others do not discover it. To use this feature, simply right click a key and select ‘permissions…’.
Disable Compression on your system:
Upon restart, your machine will no more have the forte to compress files. Not to worry though. The files which are already compressed will continue to behave normal but no new files will be fortunate enough to be compressed anymore. Even those which were compressed before cannot be decompressed and compressed back again. If you try, you get an error message.