The data revolution has not only given enterprises new and powerful ways to intelligently use information assets -- it has also made it easier for governments to conduct surveillance on their citizens, experts say. Revelations that the National Security Agency gathered data on millions of phone calls made through Verizon and Internet communications stored by nine companies and services are probably just the tip of the iceberg, analysts suspect. "My sense is they are looking for network patterns," said Fatemeh Khatibloo of Forrester Research. "They are looking for who is connected to whom and whether they can put any time lines together. They are also probably trying to identify locations where people are calling from."