. >> matt zeiler, the ceo of clarify, and john leonard, robotics repressor.ld being targeted by hackers. personal data on more than 4 million patients has been stolen. we tell you who was behind it and exactly what they stole next on "bloomberg west." ♪ >> welcome back to "bloomberg west." hackers hit community health systems which operates hotels mainly in the south. they stole social security numbers, birthdays, and addresses of 4.5 million americans. they believe the intact came from china in the months of april and june. from streaming video to crowd source images, technology is playing a central role in telling the story of the protest in ferguson, missouri. what technology is actually being used by the citizens and law enforcement as well? i'm joined by dave simmons and peter. it allows anyone to share safety-related videos and is used by several law enforcement agencies. we talked about how the technology of twitter and facebook is helping to spread the story of what's happening and what happened. what is law enforcement doing in those regards? >> law