The U.S. National Security Agency (NSA) defends its data collection practices amid revelations that almost 90% of the data it sweeps up involves ordinary Internet users not suspected of crimes. NSA spokeswoman Vanee Vines said the agency has long acknowledged that data it intercepts as part of surveillance activities involves non-suspects in terrorism investigations. Vines: NSA has long contended that it employs strong measures to ensure the privacy of such data. The data was supplied to the Post by Edward Snowden.”]