||Find out how you are traced while surfing on the Web
Using Find File, look for a file called cookies.txt (or MagicCookie if you have a Mac machine). Using a text editor, open the file and take a look. If you've been doing any browsing, the odds are about 80/20 that you'll find a cookie in there from someone called "doubleclick.net".
If you're like me, you never went to a site called "doubleclick". So how did they give you a cookie? After all, the idea of the cookie, according to the specs published by Netscape, is to make a more efficient connection between the server the delivers the cookie and the client machine which receives it. But we have never connected to "doubleclick".
Close MagicCookie, connect to the Internet, and jump to www.doubleclick.net Read all about how they are going to make money giving us cookies we don't know about, collecting data on all World Wide Web users, and delivering targeted REAL TIME marketing based on our cookies and our profiles. Pay special attention to the information at:advertising/howads.htm You'll see that the folks at "doubleclick" make the point that this entire transaction (between their server and your machine) is transparent to the user. In plain English, that means you'll never know what hit you. So what's happening is, subscribers to the doubleclick service put a "cookie request" on their home page for the DoubleClick Cookie.
When you hit such a site, it requests the cookie and take a look to see who you are, and any other information in your cookie file. It then sends a request to "doubleclick" with your ID, requesting all available marketing information about you. (They're very coy about where this information comes from, but it seems clear that at least some of it comes from your record of hitting "doubleclick" enabled sites.) You then receive specially targetted marketing banners from the site. In other words, if Helmut Newton and I log on to the same site at the exact same time, I'll see ads for wetsuits and basketballs, and Helmut will see ads for cameras. If you log in to a "doubleclick" enabled site, and it sends a request for your "doubleclick" cookie, and you don't have one, why each and every one of those sites will hand you a "doubleclick" cookie. Neat, huh? And you can bet they're going to be rolling in the cookie dough.
The main concern is that all this is done without anyone's knowledge. Some people may find the gathering of any information invasive to their privacy, but to the average level headed personal, the use of this information is harmless in itself as long as you know the limitations of these networks, who is collecting what information and for what purpose. On the other hand, what right should anyone have to collect information about me without my knowledge, and why should they break my right to privacy, you have to find the right balance between these views. One of the main issues is awareness.
So much for making the "client-server negotiation more efficient", whatever your view on tracking, the cookie protocol has certainly been manipulated for this use, against its original intent. Note that recent versions of Netscape have an option to show an alert before accepting a cookie and they also allow you to block cookies completely, see the Version 4 update and the Stopping Cookies page for more detailed information.
This is what other surfers did to work around Cookies
A suggested way to handle this was to delete the file and then replace it with a write-protected, zero-length file of the same name. It's not my suggestion (and I don't remember who did suggested it) but I did that on my system and that same zero-length, write protected file is still there. I surf to literally hundreds of WWW pages per month and if any of them handed me a "cookie", it sure didn't take. I can't provide a guarantee that this will prevent someone from handing you a "cookie" but if they do it will be very obvious by the non-zero length file size.
In Internet Explorer
Actually, if you want to keep cookies but want rid of the double-click place and other future invasions in the future, try this: Internet Explorer 3.0 no longer has a single cookies.txt it has a folder in the windows directory with lots of individual txt file inside. Find the double-click one and corrupt it so that double-click recognizes and doesn't replace it but it gives it no information. Then lock the file.
I have found a way to protect myself from the "Cookie Monster". My cookies.txt and netscape.hst files are set to 0 (zero) bytes and are attributed as system, hidden, and read only. This seems to work very well in Netscape Navigator 2.02 (32 bit). You can do the same thing, if you choose. There seems to be a slight problem in some of the sites that will allow you to configure them to your preferences, but I'll trade security for convenience any day. I use an app from Privnet called Internet Fast Forward. It will block out cookies (you can also filter them selectively... let certain cookies for site preferences through, block all others), ad images, images larger than a certain size in KB, images that you select. It's currently in beta, but is a very good app.
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