In Pictures: The biggest Internet security challen...
An illustration shows the logos of Google and Yahoo connected with LAN cables in a Berlin office. Stories this year indicated the US National Security Agency has tapped directly into communications links used by Google and Yahoo to move huge amounts of email and other user information among overseas data centers. Snowden disclosures appeared to show the agency has used weak restrictions on its overseas activities to exploit major U.S. companies' data to a far greater extent than realized.
In Pictures: The biggest Internet security challenges of 2013