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Third-party tracking cookies


Humpty

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I guess the sky is falling ... :rolleyes:

Just because your Web browser is set to block third-party tracking cookies that doesn't mean all of them are being blocked.

 

A growing number of Web sites are quietly resorting to the use of "first-party," subdomain cookies to skirt anti-spyware tools and cookie blockers and allow third-party information gathering and ad serving, according to some privacy advocates and industry analysts.

 

Though the cookies are not fundamentally different from other third-party cookies, they are very hard to detect and block, said Stefan Berteau, research engineer with CA's anti-spyware research team. The result: companies could theoretically use the cookies to quietly gather and share consumer information with little risk of detection, he said.

 

So far, the use of first-party, subdomain cookies appears to be less prevalent than standard third-party cookies, Berteau said. "But it's the kind of thing that might catch on quickly."

Infoworld Article

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