With the patch, Firefox sets cookies from foo.com because you visited it, yet blocks cookies from because you never visited directly, even though there is actually just one company behind both sites," Eich said in May. "For example, say you visit a site named foo.com, which embeds cookie-setting content from a site named. It sounded good, but there were complications, Eich explained, like false positives and negatives. Mozilla was testing a patch from Stanford grad student Jonathan Mayer that would basically allow cookies from sites that you visited before, but block those from sites to which you had never navigated. Last month, however, Mozilla announced that, for now, it would put on hold plans to block cookies by default in stable versions of Firefox. This type of blocking is already in place on Apple's Safari, while Microsoft irked advertisers by turning on "do not track" by default in IE10. But there are also concerns about targeted advertising and how much data is really collected.Īs a result, browser makers like Mozilla have been toughening up their cookie rules with "do not track" technology. The CIS has developed a centralized list of websites that would either be blocked from collecting data - known as cookies - or allowed to gather that data on participating browsers.Ĭookies can be useful, like remembering passwords and settings on sites that you surf to frequently. Mozilla this week provided more details on how it will handle tracking cookies in upcoming versions of Firefox, announcing a partnership with the Center for Internet and Society (CIS) at Stanford to create a "block" and "allow" list of websites.Ĭookie-blocking by default, which was originally planned for Firefox 22, is still on hold as Mozilla works out the details, Mozilla CTO Brendan Eich wrote in a blog post (Opens in a new window). How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill. How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.
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