Bangalore: Google’s latest privacy policy is under fire as European Union data protection authorities warned the search giant to remove the controversial changes it introduced into policy, which according to the data protection commissioner, did not provide any options for users to opt out.

Following this, Google will soon be asked by CNIL, an aggressive European data protection commissioner, to remove the changes and roll back to the state that existed before.

According to Reuters, which came across a letter from the regulators to Google, the search giant was asked to reveal its intentions and methods for combining the huge chunks of user data collected from its various services. The letter also urges the company to ask explicit permission to its users while bridging their data together.

The letter was signed by 24 of 27 data regulators from different EU countries. "Combining personal data on such a large scale creates high risks to the privacy of users," says the letter.

According to Chris Watson, a partner and privacy expert at CMS Cameron McKenna, a law firm who talk to guardian, "By putting the CNIL in charge of this, the EU was going for blood. It was a declaration of intent."

The clash began in March, following the introduction of a new privacy policy by Google, combining 60 policies into one and starting to pool the user data it gets from services including Gmail, YouTube and Google+. CNIL, the data protection commissioner, after conducting an investigation into it, gave Google “12 practical recommendations” to be adopted for bringing the policy in line. However, Google’s reply proved unsatisfactory, igniting the clashes.

The recent proceedings will put the world’s most popular search engine into more trouble, as recently, in another case, the FTC was convinced that Google is manipulating its search results to harm its rivals.