Social media companies like Facebook won't talk about who can access face-tagging data. That silence is a problem, privacy advocates say. iStockPhoto.com hide caption

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Heavy Internet traffic and system problems plagued the launch of the new HealthCare.gov insurance exchange site. Karen Bleier/AFP/Getty Images hide caption

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Labels on bags of snack foods indicate they are non-GMO food products. Robyn Beck/AFP/Getty Images hide caption

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In the last few years, the feds have expanded efforts to collect tips about people's behavior in the real world. At a fusion center in Las Vegas, workers like Daniel Burns, a program coordinator, analyze suspicious activity reports. The ACLU on Thursday posted more than 1,800 of these reports that were gathered in central California. Monica Lam/Center for Investigative Reporting hide caption

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Police officials stand next to a bullet-ridden Seattle Metro bus on Aug. 12. A man with a history of mental illness shot and wounded the driver, then died in a chaotic shootout with police. Ted S. Warren/AP hide caption

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Seattle law enforcement's mellow attitude toward pot was on display at this year's annual Hempfest, where the cops were at the gate — handing out bags of Doritos. Martin Kaste/NPR hide caption

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Jeff Brantingham, creator of PredPol, demonstrates computer-generated "predictive policing" zones at the Los Angeles Police Department Unified Command Post in Los Angeles last year. Damian Dovarganes/AP hide caption

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Take a tour of the Hanford site, a nuclear production complex in Richland, Wash., and you'll see the hundreds of mechanical water pressure gauges wired to the process tubes inside the core. Tour guide Paul Vinther warns that bumping these gauges could throw off the readings enough to trigger a an emergency shutdown of the reactor. Martin Kaste/NPR hide caption

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Pete Ashdown is founder and CEO of XMission, Utah's oldest Internet service provider. Flickr via Center for Study of Ethics at UVU hide caption

itoggle caption Flickr via Center for Study of Ethics at UVU

People wait to attend a Mozilla press conference in Barcelona, Spain, in February. Mozilla's Firefox and other Web browsers allow users to opt out of third-party tracking cookies. Josep Lago/AFP/Getty Images hide caption

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Tech workers looking for jobs may think twice before looking at job ads that are targeted at Americans but actually are intended for foreigners. iStockphoto.com hide caption

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