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Data Security; Are Your Company Assets Really Secure?

2008-06-25来源:

Is your data secure? Think again. Securing data is unlike any other corporate asset, and is likely the biggest challenge your company faces today. You may not see it, but almost all of your company's information is in digital form somewhere in the system. These assets are critical because they describe everything about you; your products, customers, strategies, finances, and your future. They might be in a database, protected by data-center security controls, but more often than not, these assets reside on desktops, laptops, Home computers, and more importantly in email or on some form of mobile computing device. We have been counting on our firewall to provide protection, but it has been estimated that at least fifty percent of any given organization's information is in email, traveling through the insecure cyberspace of the Internet.

Digital Assets are Unique

Digital assets are unlike any other asset your company has. Their value exceeds just about any other asset your company owns. In their integral state they are worth everything to your company; however, with a few "tweaks" of the bits they are reduced to garbage. They fill volumes in your data center, yet can be stolen on a keychain or captured in the air. Unlike any other asset, they can be taken tonight, and you will still have them tomorrow. They are being created every day, yet they are almost impossible to dispose of, and you can erase them and they are still there. How can you be sure that your assets are really safe?

Understanding Physical Security Architectures

Physical assets have been secured for thousands of years, teaching us some important lessons. An effective security architecture uses three basic security control areas. Let's assume you want to create a secure Home for your family; what would you do? Most of us started with the basics; doors, windows, locks, and perhaps a fence. Second, we rely on insurance, police protection, and we may have even purchased an attack dog or a personal firearm. Given these controls, you may have taken one more step to provide some type of alarm. Not trusting your ears to detect an intrusion, you might have installed door and window alarms, glass break sensors, or motion detection. You may have even joined the neighborhood watch program in your area. These are the controls everyone uses, and they are similar to the controls that have been used since the beginning of mankind.

Which is most important? Looking at the three categories of security controls used, the first consists of protective devices that keep people out; doors, windows, locks, and fences. Secondly, alarms notify us of a break-in. Finally we have a planned response control; the police, use of a firearm, or recovery through insurance. At first glance it may appear that the protective controls are the most important set of controls, but a closer look reveals that detection and response are actually more important. Consider your bank; every day the doors are open for business. This is true of just about every Business, Home, or transportation vehicle. Even the bank safe is generally open throughout the day. You can see it from the bank teller counter, but step over the line and you will find out how good their detection-response plan is.

Evaluating your Company's Approach

Now look at your digital assets; how are they protected? If you are like most organizations, your entire security strategy is built on protection controls. Almost every organization in America today has a firewall, but does not have the ability to detect and respond to unauthorized users. Here is a simple test; run a Spyware removal program on your system and see what comes up. In almost every case you will find software installed on your system that was not installed by an authorized user. In the past this has been an irritation; in the future, this will become the program that links uninvited guests to your data. Bruce Schneier, a well known security author and expert writes in his book, Secrets and Lies, "Most attacks and