Google was under fire Friday after it was revealed the Internet giant's ad-targeting "cookies" bypassed track-blocking software on Apple's web browser for iPhones and computers. Snippets of code called "cookies" from Google three online ad specialty firms slipped past tracker-blocking safeguards on Apple's Safari browser, Stanford University graduate student Jonathan Mayer said Friday in a blog post.
"Some privacy researchers and advocates have characterised the interplay between third-party web trackers and browser privacy measures as a 'cat and mouse game' or 'arms race,'" Mayer said. "This research result regrettably affirms that view as reality for, quite possibly, millions of users." Safari is the most widely used browser on mobile devices and the default browser on iPhones and Macintosh computers. The Apple browsers are pre-set to block tracking cookies.
Google discontinued use of the offending cookies after Mayer's findings went public, and defended itself against outrage over what it characterised as an unintended side-effect of an effort to safeguard online privacy. Google last year began using cookies in Safari browsers to let people signed into Google accounts get personalised services, such as being able "+1" ads or other online content as likeable for friends at its online social network.
Specialised cookies were crafted to be set temporarily in Safari browsers to check whether a user was signed into a Google account and had opted for personalised services such as social ads from double-click. The plan was purportedly to provide users personalization they requested while disclosing no information about them to Google-owned ad specialty firm DoubleClick.
Google reportedly did not realise was the presence of the cookies opened Safari browser doors to a slew of DoubleClick ad tracking cookies, which would otherwise have been rejected. "The Safari browser contained functionality that then enabled other Google advertising cookies to be set on the browser," the California company said in a released statement.
"We didn't anticipate that this would happen, and we have now started removing these advertising cookies from Safari browsers," it continued. "It's important to stress that, just as on other browsers, these advertising cookies do not collect personal information." US legislators and privacy advocates lashed out at Google, accusing the company of trampling on people's privacy and calling for an investigation.