Data security refers to the protection of data from unauthorized access, use,  change, disclosure and destruction. 

There are different types of data security measures such as data backup, encryption and antivirus software which will ensure the security of your sensitive data.

Government employees should ensure periodic backups of computer data on external storage devices like CD/ DVD or USB drive etc., to ensure availability of data in case of system issues like disk failure, system crash etc.,

Ensure to take regular backups of sensitive data on external storage devices to avoid data loss due to any system related issues.