JavaScript Cookies:

Making the Most from the Drudgery of Others

Are They Safe and Secure?

Cookies are safe. They are not an invasion of your privacy (you can turn them off after all!) or a way for someone to put "harmful" things on your computer. While this is technically possible, it is highly unlikely. Here is a excerpt from "Using HTML 4, XML, and Java 1.2" by Eric Ladd and Jim O'Donnell:

The biggest problem facing cookies could be a psychological one. Some savvy web users believe that all cookies are a tool used by "Big Brother" to violate their privacy.
...In Reality, cookies are seldom used for these purposes. Although technically these things are possible, better and easier ways of getting the same type of information now exist without using cookies.
...Other users are concerned that cookies set by one Web site might be read by other sites. This is completely untrue. Your Web browser software prevents this from happening by making cookies available only to the sites that created them.

Furthermore, cookies themselves can be secured using a secure parameter. Feeling safer? Good. Now let's jump into the actual use and operation of cookies.

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Created: Jan. 12, 2000
Revised: Jan. 14, 2000

URL: http://webreference.com/programming/javascript/cookies/page3.html