7 Layers of Internet Security Protection

The seven layers of Internet security have changed over the years and will probably change in the coming years.
This is not because one particular rule was anymore wrong in the past than it is now. It is more because trends and technology have changed. Nowadays the addition of a small USB device into a computer can direct duplicate data copies to another computer on the other side of the planet, and the poor host company has no idea they are being robbed. Backing up your data used to mean printing it off and locking it up, but now programs are so big and data chunks are so large that the only way to back something up is to put it on a server that has absolutely no access to the Internet.

1. Physical Security
   
   Make sure that you keep your servers under lock and key. Your server racks should be lockable, and the doors and windows going into your computer/data room should be locked and secure. You should make sure than any machines that are not in a server/data room are protected with security devices. Any spare USB ports should be blocked and locked. The button for the disk drive should be removed and replaced with a command that comes from the computer its self. You should also make sure that all screensavers are password protected, and that your PC towers are within a lockable case.
2. Monitor and Test Your Systems
   
   You should have policies in place that make sure that you test your external and internal systems repeatedly in a routine manner. Any errors or problems should be entered into a log. There should be a report and alert process to identify any problems.
3. Information Security Policies
   
   Make sure that you abide by the law with regard to information security. Make sure that your staff is aware of your security policy rules and that you show and demonstrate your security policies to your customers.
4. Secure Networks and Systems
   
   This may take a substantial investment, since a network is a little like a frayed boot lace. All you need to do is pull hard on one of the frays and the whole bootlace is messed up. You will need to invest in a secure network to start with, and then ensure that all of the connected systems are secure so that a hacker or malcontent cannot get onto the system (via one of the frays). Be aware of the dangers of where the Internet connects to your private network. This is where you need the biggest and strongest locked door (speaking metaphorically).
5. Strong Access Control Measures
   
   Unauthorized access should be one of your biggest concerns. It can come from all directions. It can come from something as simple as adding a small piece of technology to an unsuspecting computer for a short while, to something that your emails filter allowed through your firewall/Internet security. You should have multiple levels of authentication. It should be impossible for one person to access all systems by knowing just one password (or getting past one security protocol).
   
6. Backing up your data
   
   This is a no-brainer. You should be backing up your data so that if you have a massive system crash or have to purge the network in order to save your details from getting into the wrong hands, you have a back up copy so that you do not lose all of your data. This is sheer common sense. What is also sheer common sense is that you keep this information on a separate system that is not attached to your primary computers. It is also a good idea to keep this information secure with passwords etc.
7. Vulnerability Programs
   
   These are numerous and you should ideally have quite a few of the good ones. These are things such as firewalls, virus checkers, anti-spam software, etc. There are commercially available programs that can do this, but many larger companies will hire software developers to make their own vulnerability programs.

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