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Old 07-06-2010, 03:34 PM
 
Location: Neither here nor there
14,810 posts, read 14,193,823 times
Reputation: 32950

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I visited a particular online vendor site this morning for the first time. Now this afternoon, I'm getting mail from them wanting me to buy from them. How do they do this? Their mail is coming to my yahoo address and I did not leave my address with them. Coincidence?
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Old 07-06-2010, 03:44 PM
Status: "Enjoying life..." (set 6 days ago)
 
Location: San Antonio/Houston/Tricity
39,761 posts, read 57,642,611 times
Reputation: 93515
Quote:
Originally Posted by Cunucu Beach View Post
I visited a particular online vendor site this morning for the first time. Now this afternoon, I'm getting mail from them wanting me to buy from them. How do they do this? Their mail is coming to my yahoo address and I did not leave my address with them. Coincidence?
Most likely cookies are responsible for it. Check your set up.
A browser cookie is a small piece of information sent by a web server to a web browser to be stored for future use. The data in the browser cookie will be sent back to the web server whenever the browser reconnects to the web site.
Cookies are commonly used to store user preference information, such as web site options. Cookies are also used to store shopping cart contents. The most security-relevant use of browser cookies is when they are used to store authentication data, such as user names and passwords.
Browser Cookie - Top Bits
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Old 07-06-2010, 04:41 PM
 
Location: Neither here nor there
14,810 posts, read 14,193,823 times
Reputation: 32950
Quote:
Originally Posted by elnina View Post
Most likely cookies are responsible for it. Check your set up.
A browser cookie is a small piece of information sent by a web server to a web browser to be stored for future use. The data in the browser cookie will be sent back to the web server whenever the browser reconnects to the web site.
Cookies are commonly used to store user preference information, such as web site options. Cookies are also used to store shopping cart contents. The most security-relevant use of browser cookies is when they are used to store authentication data, such as user names and passwords.
Browser Cookie - Top Bits
Cookies, I understand but it's the email address that has me puzzled. Would an email address be part of that cookie information? I didn't leave an email address although I did do a search while on the site for what I was looking for. I got to the site from a Google search. Could Google be giving out my Yahoo address to sites visited when clicking a link provided by them? I actually have a gmail address but my username for my Google account is my Yahoo address.

Last edited by Cunucu Beach; 07-06-2010 at 04:51 PM..
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Old 07-06-2010, 06:11 PM
Status: "Enjoying life..." (set 6 days ago)
 
Location: San Antonio/Houston/Tricity
39,761 posts, read 57,642,611 times
Reputation: 93515
Quote:
Originally Posted by Cunucu Beach View Post
Cookies, I understand but it's the email address that has me puzzled. Would an email address be part of that cookie information? I didn't leave an email address although I did do a search while on the site for what I was looking for. I got to the site from a Google search. Could Google be giving out my Yahoo address to sites visited when clicking a link provided by them? I actually have a gmail address but my username for my Google account is my Yahoo address.
No. Cookies cannot retrieve any private info stored on your computer. But there are also third party cookies/tracking cookies that can last for years or decades. They can create a long history of your Web browsing and over time, your browsing habits can reveal a good bit of information about you. If you have filled out forms online with your real name and contact information, or have clicked on banners then purchased an item, or if you have filled out sweepstakes or contests forms, then it is quite possible that major online advertisers know your name and have associated it with your Internet Protocol, or IP address and other information. Companies that hold this profiling information of your Web browsing habits can then sell or merge that information with many other sources of information.
I don't know how they got your yahoo address, but somehow they were able to retrieve it from an old registration form, or ebay, or another account.
You should try to opt out third party tracking cookies. This is a process that usually involves clicking on a button to download the opt-out cookie. To do this, you go to the marketer's Web site, find the privacy policy, then find the "opt out" information. The cookie your computer will get tells the company not to track you anymore.
Opting out permanently: Browser Instructions - Advertising Cookie Opt-out Plugin
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Old 07-06-2010, 07:20 PM
 
Location: Neither here nor there
14,810 posts, read 14,193,823 times
Reputation: 32950
Thanks for that info. How they got my email address remains a mystery. I visited the opt-out site you linked but the DL button didn't work. I Googled for info and found TACO and installed the plugin for that. I opted out of every ad tracker they gave me the option to opt out of, including the trackers used by CD.
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Old 07-06-2010, 08:46 PM
 
40,161 posts, read 41,766,549 times
Reputation: 16735
Quote:
Originally Posted by Cunucu Beach View Post
Thanks for that info. How they got my email address remains a mystery.
You visit domain A and fill out a form and they have an agreement with a third party domain B to share your email address with them. In addition to getting your email address Domain B sets a cookie on your machine or records your IP address.

Domain B also has an agreement with domain C. When you visit domain C domain B can pass the information about you they gathered provided from A.



Quote:
including the trackers used by CD
Keep in mind cookies are also used for good things such as the auto login feature. Features like that is what they were originally intended for.
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Old 07-06-2010, 09:52 PM
 
16,308 posts, read 25,256,087 times
Reputation: 8302
Javascript easily harvests your email and other information.

Online security is an oxymoron.
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Old 07-07-2010, 08:08 AM
 
28,595 posts, read 40,577,263 times
Reputation: 37216
And my wife doesn't understand why I run Ccleaner all the time...
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Old 07-07-2010, 08:55 AM
 
Location: Neither here nor there
14,810 posts, read 14,193,823 times
Reputation: 32950
Quote:
Originally Posted by thecoalman View Post
You visit domain A and fill out a form and they have an agreement with a third party domain B to share your email address with them. In addition to getting your email address Domain B sets a cookie on your machine or records your IP address.

Domain B also has an agreement with domain C. When you visit domain C domain B can pass the information about you they gathered provided from A.



Keep in mind cookies are also used for good things such as the auto login feature. Features like that is what they were originally intended for.
That is probably what happened that gave my email address to the online vendor that immediately started sending me ad mail after I had visited their site. I allow cookies so I can log in to sites I visit frequently (like CD) but have stopped the third party cookie sharing. Thanks for that reminder.

With TACO now in place I am getting a little window that pops up frequently telling me how many tracking attempts they have blocked for me. It totals over 300 just since yesterday.

Thank you soooooo much for telling me about Google ad block. Even though I didn't get that one to work for me, I found TACO and it seems to be doing a good job.

And thanks to Tek_Freek for the reminder about CCleaner. I run Win Utilities and Glary regularly but have been negligent about CCleaner. Will add that one to my regular cleaning schedule.

Last edited by Cunucu Beach; 07-07-2010 at 09:11 AM..
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