The U.S. National Security Agency issued a warning to military and intelligence-community personnel about cellphone location tracking, The Wall Street Journal reports. “Location data can be extremely valuable and must be protected. It can reveal details about the number of users in a location, user and supply movements, daily routines (user and organizational), and can expose otherwise unknown associations between users and locations,” the agency said in the announcement. The NSA recommends personnel turn off location-sharing services on mobile apps and limit mobile web browsing.
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