This means a copy you have updated within the last 7 days. Get a copy of PGP and encrypt all sensitive documents sent using email. Sensitive is anything you do not want made public, or that maybe used against you latter in life. Secure your system with a desktop security device that uses a strong passphrase if anyone other than you has access to your system. The above is the minimum we all should follow religiously but it is not enough.
Security begins with a state of mind.
Think security and your system will be secure or as secure as necessary to prevent albeit the most determined effort. It is just not worth the effort for a hacker to come after you with a determined effort unless you have something that is worth the risk and most of us do not fit in that category. If you do, you need professional assistance that is beyond the scope of these pages. A Firewall is a software program that stops dangerous intruders preventing them from getting access to your system. It can not be emphasized enough, if you are using file sharing a Firewall is mandatory or you will definitely be hacked it is only a matter of time.