On a stand-alone computer, there are a range of things that can be done to secure the system, but if you are a Windows 95 user, it is worth considering the move to Windows NT Workstation. Built into this operating system is the ability to encrypt the hard drive, allow only approved users to log into the system, and allow only approved users access to certain files and applications.
This is all achievable with Windows 95, but requires third-party products. There is such a vast array of security applications for Windows 95 that I have trouble knowing where to begin. Norton's For Your Eyes Only (http://www.symantec.com) is one product that I hear about consistently from computer administrators. It adds many of NT's security features to Windows 95.
Computer security is a very complex business, and we can't cover all the issues in a Help Screen article. However, here are a few points to bear in mind.
Despite media attention about computer hackers, data stored on a network file server is usually more secure than on a personal computer (depending, of course, on how well the network is set up).
It is also worth remembering that even if your computer is secure, your backups and copies may not be. Backups should be done with software that allows password protection. Related to this is the ability of a number of software packages such as Word and Excel to password-protect individual files.
The system BIOS of most computers can be used to set a start-up password. Unfortunately, this can usually be subverted by removing the computer's system battery, so it is really only effective against the casual intruder.
The physical security of the system should always be looked at. There is no point setting up a highly secure computer system if someone can just walk into your office during your lunch break when you are logged in. Consider using a screen saver password if you work in an environment where other people can easily access your computer while you are away from it. Unfortunately, the easy portability of a PC means that a thief can often walk away with the box and attempt to get around the system's security at his or her leisure
Using software to maintain a system log allows you to see if anyone has tried to gain unauthorised access to your computer or files.
A high level of security can be achieved by keeping all data on removable media (such as Syquest cartridges, floppies or zip disks) and storing them in a safe at the end of each day. But look for loopholes! I remember that at one institution that relied on this type of security there was a person who had a bad memory -- so she kept the combination of the safe in an unlocked filing cabinet under the heading "Security".
- Roy Chambers
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