Keeping Your Computer Safer on the Internet


Much like much of what is called "safe sex" would be more accurately called safer sex, I will call this safer computing.

This is in some sort of order but I will not promise order of importance because it is all important.


1) Keep your virus signatures up to date. Update them at least once a week or even better daily. Most commercial anti-virus software can be configured to automatically update on a regular basis. If you want to save a few dollars AVG Anti-Virus has a free virus scanner for personal use. Make sure you update the signatures regularly. This is the most important part. An anti-virus software with old signatures is almost useless or even worse will give you a false sense of safety making it worse that useless.

2) Keep up with patches. If you have Windows 98, ME, 2000 or XP you can click on the start button and then go to Windows Update. This will take you to a web site that includes a list of the important security and functionality patches available for your system. If it's marked "Critical" it is important. The "Recommended" patches are more a personal choice issue. If you have Windows XP or 2000 (2000 must have a recent service pack but I'm not sure which one) you can set your computer to automatically download and install patches on a regular basis. Even if you turn auto patching on you should probably check Windows Update every couple of months to make sure you are not missing anything. There are some things auto patching will not catch.
If you are running something other that a Microsoft operating system patch management is still extremely important but the methods will vary from operating system to operating system and in the case of Linux from distro to distro.

3) Run a personal firewall. This will help to hide you from criminals and intruders on the Internet. While you may not care about your computer getting attacked the person that attacks you may just see you as a jumping off point to attack someone else. The person who gets attacked from your computer may care. Once again assuming you are using a Windows based machine there is a free version of ZoneAlarm (do a search for "free.") If you have a cable or DSL connection you may even want to consider using a hardware firewall which can be purchased for less than $50. Refer to my comparison home and small office firewalls for more information.

4) On a subject related to viruses there is the issue of spyware. Essentially spyware is software that reports back to it's creator. At the most basic level it may report back web sites you visit, your e-mail address or other personal information. At the most insidious it may actually steal information you have stored on your computer. There are basically four ways you can reduce your exposure to this threat.

4.a) Read the license agreement that comes with software. Usually hidden in the license there will be some indication that information will be sent back to the author assuming that the author does not have completely criminal intents.

4.b) Just because a pop-up box asks you to load a piece of software does not mean you should say yes. Or as Nancy Reagan said "Just say no."

4.c) Run a personal firewall (3 above). Many spyware applications will trigger a firewall warning when they try to make a connection back home.

4.d) Periodically scan your computer with a spyware scanner. I have used Ad-Aware and I was impressed. It will flag a few things that may not warrant worry but I have not had it flag anything that would truly be harmful if removed. I have also used SpyBot -- Search & Destroy. SpyBot -- Search & Destroy is much more thorough. Recent versions of SBS&D have added the ability to clean up temporary files used by legitimate programs. SBS&D also comes with a program called Tea Timer that can run in the background. Tea timer will actually stop spyware from being loaded on your machine in the first place. It takes a bit of getting accustomed to because every time you load a piece of software you will get several prompts but it is nice. Both programs are free. Either of these programs may cause programs that rely on spyware to fail.

5) Think twice when making online purchases. Having said this I buy a great deal of merchandise on the Internet. So what exactly am I suggesting here? There are con artists on the Internet the same as in the physical world. If something seems too good to be true it probably is. A second thing you should watch for is make sure that every time you enter your credit card or other sensitive information into a web browser you see the little lock at the bottom of the page. The lock means that the connection is encrypted meaning that someone between you and the merchant will not be able to read your information. That doesn't mean that someone can't steal the data after it gets to the merchant but at least the most basic of security precautions have been taken. Beyond that it is really a judgment call. If a web-shop looks questionable don't give them your information. This is much akin to if you went into a local store that seemed questionable you would think twice before handing over the plastic. Same idea.

6) Be safe. Contrary to what the Internet Service Providers commercials may claim the Internet is not the safest of places to be so protect yourself while you are in the Internet. To put things in some real world perspective the above suggestions are sort of akin to carrying mace if you are walking down a bad street. It doesn't necessarily mean that you can't go down that street but you should be aware of your surrounding.

(original date 2002 or 2003)