Tuesday, June 10, 2014

Review of what are tracking cookies::How Do I Clear Cookies? - What's Your Question?







Review of what are tracking cookies::How Do I Clear Cookies? - What's Your Question?








There               is               so               much               writen               junk               in               the               form               of               scare               tactics               aimed               at               the               paranoid               about               the               subject               of               Cookies.I               have               heard               some               of               the               most               ridiculous               myths               from               conspiracy               theorists               about               the               government               getting               information               from               Internet               users               by               reading               their               cookies.While               that               scenario               is               more               probable               today               than               ever,               it               is               not               currently               a               reality…               at               least               not               with               cookies.

In               most               cases,               the               cookie               does               not               carry               much               personal               information               about               you,               other               than               an               IP               number               and               some               browsing               preferences.One               of               the               things               that               consumers               HATE               about               cookies               is               that               information               entered               on               a               web               site               where               they               have               made               purchases               can               (and               often               does)               go               into               a               database,               where               it               is               matched               to               the               cookie               which               tells               them               what               pages               they               have               viewed.Often               times,               this               information               is               sold               to               other               companies               who               sell               similar               products.

People               hate               spam,               junk               mail,               and               sometimes,               even               salespeople.All               of               this               adds               up               to               a               general               and               often               misinformed               opinion               or               distrust               for               cookies.
               Know               who               you               are               buying               from.

Check               out               the               company               thoroughly.

The               spam               masters               don't               make               privacy               statements.

Look               for               privacy               policies               on               the               web               site               so               that               you               know               that               your               information               will               not               be               sold               to               other               companies.
               So               what               is               the               magic               that               occurs               when               your               browser               talks               to               a               server               issuing               cookies?

Try               not               to               fall               asleep,               this               is               exciting               stuff.
               1.

You               connect               to               the               web               site.
               
               2.

The               web               server               identifies               itself               and               asks               your               browser               if               it               has               ever               accepted               a               cookie               before.
               
               a.)               If               the               browser               says               no,               you               are               given               a               cookie,               and               the               data               is               written               to               your               cookies               file.
               
               b.)               If               the               browser               says               yes,               too               bad:               sometimes               you               will               still               get               another               cookie,               but               it               will               likely               have               the               same               numerical               identifier.

If               you               don't               have               a               cookie               from               that               site,               you               will               have               a               numerical               value               assigned               to               a               cookie               which               will               be               passed               on               to               your               browser.
               Wasn't               that               exhilarating?

If               you               think               that               was               fun,               brace               yourself.
               A               cookie               CAN               (but               doesn't               have               to               have)               an               expiration               date.

That               means               that               if               you               come               back               to               the               site               after               the               expiration               date,               the               marketing               genius               (ahem)               that               is               tracking               you               doesn't               want               you               considered               as               a               returning               user               if               you               haven't               returned               to               his               site               since               WWII.
               Cookie               information               is               usually               used               by               web               servers               administrators               to               determine               the               following               data:
               To               isolate               UNIQUE               users.
               To               calculate               how               many               users               are               NEW               versus               RETURNING               visitors.
               To               determine               how               often               UNIQUE               visitors               return               to               the               site.
               So               what               happens               when               you               accept               a               cookie               on               some               ones               site?

Well,               you               are               assigned               a               unique               numerical               value.

Every               time               you               come               back               to               the               site               that               issued               the               cookie,               the               server               will               ask               your               browser               if               it               has               already               issued               you               a               cookie.If               you               still               have               your               cookie               from               the               last               time               you               visited,               then               you               don't               usually               get               another               one.This               way,               statistical               software               can               identify               you               as               a               UNIQUE               user.
               A               hit               from               a               user               without               cookies               would               look               like               this:
               webserver.name.com               -               -               [12/Jan/1996:20:37:55               +0000]               "GET               /index.htm               HTTP/1.0"               200               215
               Now,               if               this               user               had               been               from               one               of               those               big               companies               that               use               proxy               servers               that               switch               their               IP's               on               the               fly,               you               can               begin               to               see               the               problem.

How               could               you               track               a               unique               user               of               their               IP               adderess               is               changing               each               time               they               visit?
               Because               some               IP's               are               dynamically               assigned               to               users,               the               only               way               a               web               server               can               can               know               if               you               are               the               same               person               that               was               here               yesterday               is               if               it               sees               a               cookie.
               A               hit               from               a               user               with               cookies               would               look               like               this:
               webserver.name.com               -               -               [12/Jan/1996:20:37:55               +0000]               "GET               /index.html               HTTP/1.1"               200               215               "cookie_id=4544715170"
               Most               web               sites               will               store               only               a               user               ID               in               your               browser's               cookie               file.

Please               keeps               this               in               mind               if               you               are               a               paranoid               type:               a               web               site               can               only               retrieve               data               from               your               cookie               file               that               it               has               placed               there.

It               cannot               read               any               other               cookie               placed               there               by               other               sites.
               Here               is               a               couple               scenarios               that               illustrates               some               nifty               examples               of               cookies               technology:
               Suppose               I               make               a               web               site               that               is               dedicated               to               the               stock               market.

On               the               front               page,               you               are               prompted               to               put               in               the               stock               symbols               that               interest               you.

Say               you               choose               three               symbols,               surf               a               little               and               leave.

You               come               back               a               week               later,               and               just               like               magic,               you               are               served               up               a               web               page               that               shows               the               ticker               for               the               three               symbols               you               chose               a               week               ago.

The               cookie               my               web               server               gave               your               browser               remembered               the               data               you               were               interested               in               so               that               it               knew               to               serve               it               to               you               again               when               you               came               back.

Pretty               nifty,               eh?

And               remember,               the               data               is               encrypted               so               that               no               one               else               can               make               any               sense               of               the               cookie               data.
               The               next               scenario               effects               eCommerce               sites.

Ever               shop               on               the               Internet?

You               find               that               pair               of               battery               operated               heated               gym               socks               you               have               always               wanted               and               you               select               one               pair,               but               you               decide               that               you               will               continue               shopping               for               the               groovy               Monkeys               album               your               mom               likes               so               much,               and               behold,               there               it               is!

You               select               it,               and               you               are               told               it               is               in               your               shopping               cart.

All               of               the               sudden,               the               hair               stands               up               on               the               back               of               your               neck               like               a               something               great               is               about               to               happen               when               suddenly               you               find               those               red               plastic               chili               lights               that               are               so               "in"               these               days.

Now,               you               figure               you               should               stop               before               your               significant               other               takes               your               credit               cards               away               and               you               click               the               "checkout"               button.

Now               you               are               seeing               every               item               you               selected               neatly               displayed               before               you.

This               is               possible               only               because               the               product               numbers               for               the               items               you               requested               were               attached               to               the               cookie               so               that               it               could               "remember"               your               items               for               you.
               Remember:               Do               not               fear               the               cookie.

The               cookie               is               your               friend.






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