
Privacy and Surfing the Web
If you've been around the Internet a few times you probably have heard of something called a “cookie”. Mmmm… cookies. No, not that kind of cookie! This kind of cookie has implications for your privacy and can potentially offer a window into your computer that hackers could use to steal your personal information.
First, let's define a cookie. A cookie is a small text file that is placed on your computer hard drive when you visit a website. Cookies were established for several legitimate reasons. Cookies can store information in your browser, so when you visit a web page you've visited before the page loads more quickly. Or if you go to a website that requires you to “log in”, the website can automatically identify your computer and you don't have to log in every time you visit. If you've ever used an e-commerce website you know you can store products in your “shopping cart” and come back to them as you shop. This information is stored using a cookie.
As you can see cookies can be very useful. Unfortunately there are some who misuse this technology. One method of online advertising that is on the rise makes use of cookie profiling. Have you ever gone to a website and had an ad pop up for a product for which you've recently searched? Chances are it wasn't an accident. Online marketers can use persistent cookies on your computer to build a profile of you and your search history and target you with ads whenever you go to a website on which they have advertising rights. This may seem relatively harmless on the surface, but remember that these companies can use your cookies to track your specific computer and build a profile of all your online habits. Sound a little scarier now?
Now take that technology one step further and place it in the hands of a hacker. Imagine a hacker covertly installing a keylogger (simple software programs that record every keystroke a user makes) onto your computer and using your cookies to track all the websites you go to. At the same time they are tracking every keystroke on your computer. For example if you go to your bank account and log in, they can see which website you went to and what keystrokes logged you into your account. Or they can track if you go to a website and type out your credit card number. Now the potential for harm is tremendous.
Don't worry; there are steps you can take to protect yourself from these scenarios. First, always have an up to date version of anti-virus software on your computer. Norton Antivirus and McAfee are two more popular programs. You can also install spyware programs such as Ad Aware or AVG for additional protection. You can also clean the cookies out of your browser, or turn them off all together. Search the Help section of your favorite browser if you aren't sure how to do this. If you want to learn more about cookies and see what kind of information people can find out about you from your computer this is a good resource: Analyze.Privacy.net. And finally, if you are afraid you may have malicious software on your computer, take it to your nearest computer professional and ask them to clean it up for you! |