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Evercookie: a Tracking Browser Cookie You Can't Delete

Posted September 23, 2010 9:42 AM

From Boing Boing:

Samy Kamkar, an open source developer whose motto is "think bad, do good" has released an API called "evercookie." Evercookie sets a nigh-undeletable tracking cookie in your browser, storing the information in eight separate ways; if you try to delete it but leave even one copy of the data around, it will repopulate itself using that last shred. Evercookies can even spread between browsers on the same system. The point of the project is to show that browsers are lagging behind privacy-invaders when it comes to cookie management, and to spur the organizations that publish browsers into creating better tools for privacy management.

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#1

Re: Evercookie: a Tracking Browser Cookie You Can't Delete

09/23/2010 3:30 PM

I am hesitant to Read the whole article. They may slip in an evercookie.

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#2

Re: Evercookie: a Tracking Browser Cookie You Can't Delete

09/23/2010 3:35 PM

My mom used to make "evercookies". You could soak them in milk for a week and they would still come out dry and crunchy.

They looked like chocolate chip cookies but chewed like aluminum and glass!

My dentist says I have the hardest teeth he has ever seen. I think I know why.

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#3

Re: Evercookie: a Tracking Browser Cookie You Can't Delete

09/24/2010 1:05 PM

If you read the comments at the end of the article, you have to agree with some who expressed the sentiment that it would have been better to contact browser coders quietly instead of putting details in an article on the web. Some journalists are irresponsible in this regard. Both Mr. Kamkar and Mr. Doctorow are thinking the "limelight" can also become "sunlight" on an issue that needs it. I'd prefer an article saying he found a "security risk" and had contacted the people who code the browsers, without knowing details... as if there needs to be more incitement to do such things.

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#4

Re: Evercookie: a Tracking Browser Cookie You Can't Delete

09/27/2010 11:17 AM

The title is not true: you can delete them. Actually, BleachBit 0.8.1 deletes evercookies in Firefox, Safari, and Google Chrome.

(Disclaimer: I wrote BleachBit.)

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