Some data can be very confidential. In such case you need to encrypt the data so that it does not go into the wrong hands. There are lots of encryption software available to encrypt the data. But to use them first you need to install then and this can take lot of time. You can also use Windows built in compression client to encrypt information. To use this feature you need not install any software and it is a fairly simple process. So select a file that you want to encrypt, right click on it and select the 'send to' option from the menu. Select he compressed zip folder option from the sub menu. Now your data will be compressed. You can also set a password to the compressed file so that no one can access it. This video shows how to use windows to encrypt files.