turn their attention back to 2010, kranner found thousands of websites including Microsoft sites included in the P3P policy problems, the policy allows these companies to build the cookie file in IE. Most of these problems are due to typographical error and other errors caused, but some are deliberately false.
but a big hole in this setting is, if a company does not comply with the appropriate network format in P3P protocol, they can arbitrarily set the cookie file. For the Google website, they might assume that "this is not a P3P protocol, then a link is provided to explain.
but the IE platform will be different, the issues involved in it for a long time has been Microsoft and privacy researchers informed. Because by default, the IE design is blocked from the tracking company "cookie" file, but the principle is quite complex. In general, no one will stop this behavior, but Microsoft said on Monday that they are on whether to prevent this situation under the cookie file set a "positive investigation".
in the link provided explanation that its website does not comply with the P3P regulations, because the agreement will cause interference on +1 and other social networking buttons and gadgets on the noble I baby. According to the Wall Street journal’s test, doubleclick.net and adservices贵族宝贝 complied with P3> noble baby
Beijing on February 21st news, Microsoft on Monday in the official blog wrote, accusing Google of avoiding IE browser privacy settings to track users’ browsing behavior. There had been reports that Google bypass apple Safari web browser privacy settings to track the user’s browsing habits, Microsoft believes that Google has also taken similar actions in the IE.
IE but the default support for P3P technology, if a network company told the IE that they track the user, or simply not set the terms of the P3P, IE will prevent them from setting a "third party" cookie file. Advertisers and tracking companies usually track users accustomed to using this method.
privacy researchers these years have been complaining about the lack of IE, other companies are also using this loophole. Carnegie Mellon University Professor Luo Li · kranner (Lorrie Cranor) said in a blog, "a lot of companies take advantage of this loophole, including Google and Facebook.