Social Security Number Online Protection Act of 2007 - Amends the federal criminal code to prohibit a state, local government, or any officer, employee, or contractor of a state or local government, from displaying to the general public on the Internet all or any portion of any Social Security account number.
Establishes a fine of up to $5,000 a day on any state or local government that has a policy or practice of substantial noncompliance with the requirements of this Act. Authorizes the Attorney General to bring a civil action against a state, local government, or officer, employee, or contractor of such state or local government for appropriate relief for any violation of this Act.
Directs the Attorney General to award grants to states and local governments to come into compliance with such prohibition.