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Q: Information gathered by a website on its visitors ( Answered 5 out of 5 stars,   1 Comment )
Question  
Subject: Information gathered by a website on its visitors
Category: Computers > Internet
Asked by: billabong007-ga
List Price: $10.00
Posted: 09 Jun 2006 00:45 PDT
Expires: 09 Jul 2006 00:45 PDT
Question ID: 736626
Hello,

I was hoping to find out the most information a web site CAN gather
about its visitor. I know it can see the visitor's IP address, MAC
address, browser version, etc; I'd like to know the most possible
information the server can see (know), with and without java installed
on the client's browser (if that makes a difference). Thanks!
Answer  
Subject: Re: Information gathered by a website on its visitors
Answered By: palitoy-ga on 09 Jun 2006 02:10 PDT
Rated:5 out of 5 stars
 
Hello billabong007-ga,

Thank-you for your question.

The answer depends a lot on the security that the user has enabled in
his browser when accessing your site.  Having javascript (please
remember javascript is not the same as java!) enabled or disabled does
not usually matter as you can normally use an alternative scripting
language to discover the information you require.  For my answer I
will assume that he has standard/minimal settings on his browser and I
have compiled the list below that details the main things you can
discover about your users:

 IP address
 Location of user's ISP
 Name of ISP
 Location of user (Continent, Country, City - approximate latitude and longitude)
 Timezone of user
 Date/Time they are visiting
 Length of visit
 Every page visited on your site
 Whether they have visited before
 Operating system
 Various paths to folders on your system
 Versions of programs being used on your system
 Name of your computer
 How you access the internet (through a proxy or not)
 What types of documents your browser is set up to accept
 Default language of your browser (language you probably speak)
 Site you visited last
 Number of sites you visited before getting to this one
 Various miscellaneous technical settings of your browser
 Number of processors in your PC
 Type of processor
 Port you are accessing the site through
 Any session variables or cookies that have been set
 What browser extensions they have enabled/disabled (for instance,
Flash, Javascript, PDF support etc)
 Size of users screen, number of colours etc

Using all this information together you can build up very detailed
profiles of each user that visits your site (especially if you force
them to log-on to your site prior to them being able to access your
site).

If you require any further assistance on this subject please do not
hesitate to ask for clarification.

Further information:
http://www.webmonkey.com//templates/print_template.htmlt?meta=/webmonkey/geektalk/96/41/index3a_meta.html
http://www.w3schools.com/asp/coll_servervariables.asp
http://www.lib.washington.edu/asp/browser/servar.asp
http://uk2.php.net/phpinfo
http://uk2.php.net/manual/en/reserved.variables.php
billabong007-ga rated this answer:5 out of 5 stars and gave an additional tip of: $1.00
Thanks, that's exactly what I was looking for. Great work, thanks again =).

Comments  
Subject: Re: Information gathered by a website on its visitors
From: palitoy-ga on 10 Jun 2006 01:31 PDT
 
Thanks for the 5-star rating and tip!  They are both appreciated.

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