Google maintains no personal data was improperly accessed or misused.

At least two states are now investigating a breach at Google that may have exposed the private profile data of half a million people.

The investigation follows Google's announcement on Monday that a security flaw in Google's developer platform on its social network left user information vulnerable.

New York's acting attorney general and Connecticut's attorney general announced they are looking into the breach.

Google maintains no personal data was improperly accessed or misused.