Summary Box: Microsoft slams Google data policy

MICROSOFT ATTACKS: Microsoft Corp. unveils full-page ads to slam search rival Google Inc. It’s over recent changes at Google that allow it to internally merge the data it collects on user activity across services such as YouTube and Gmail.

THE ARGUMENTS: Google has touted the overhaul as a way to provide a better user experience. Microsoft says users of its free email service, Hotmail, don’t have to worry about the content of their emails being used to help target ads.

THE RESPONSE: Google published a blog post in refuting what it called “myths” about its new privacy policy, saying, “Our privacy controls have not changed. Period.”