Encryption software is the last and most important barrier in information security.
If a hacker or an insider has broad access to large parts of a network, that means unrestricted access to the all the files and documents therein unless they are encrypted. In a situation like a Human Resources Department, leaving those personal files open to wrongful use is illegal in many countries under the terms Data Protection legislation. In a PENS system, though, each area of the network is divided into smaller encrypted sections called domains which hold a lot of personal files, all encrypted using a personal encryption key and all password protected. True security using encryption software. As more and more companies buy and use laptops, the number of laptops being stolen increases greatly.