From the Apple and FBI dispute in the U.S. to a legal case in Brazil involving the WhatsApp messaging service, U.S. tech companies are finding themselves subject to widely varying laws for cooperating with local police. William Volcov/Brazil Photo Press/LatinContent/Getty Images hide caption

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For U.S. Tech Firms Abroad And Data In The Cloud, Whose Laws Apply?

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Bernie Sanders's presidential campaign sued the DNC on Friday to regain access to its voter data files. But access was restored out of court after the DNC says the campaign provided them with information about data they had breached from rival Hillary Clinton's files due to a software glitch. Manuel Balce Ceneta/AP hide caption

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Sen. Bernie Sanders, an independent from Vermont and 2016 Democratic presidential candidate, in Washington, D.C., on Wednesday. Bloomberg via Getty Images hide caption

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Sanders Campaign: DNC Blocking Voter Data Is Overkill, Breach Of Contract

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Republican presidential candidate and New Jersey Gov. Chris Christie campaigns in Manchester, N.H., in August. Michael Dwyer/AP hide caption

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PAC Supporting Christie Scoops Up Voter Data Across New Hampshire

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Charlize, 8, plays with the Kidizoom Multimedia Digital Camera made by VTech in 2009. A recent data breach hacking sensitive information, including kid's photos, is prompting parents to look twice at their children's technology usage. Oli Scarff/Getty Images hide caption

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At School And At Home, How Much Does The Internet Know About Kids?

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California Gov. Jerry Brown signs one of the hundreds of bills on Friday, among them a new law that is contains the most stringent digital privacy protections in the country. Rich Pedroncelli/AP hide caption

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People can now contribute to presidential campaigns with just a few taps on a smartphone. Jonathan Alcorn/AFP/Getty Images hide caption

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#Cashtag: Twitter To Allow Direct Campaign Contributions

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Carol and John Iovine say the health coach their insurer assigned John after he had a torrent of grave health problems in 2014 has helped them get the medical care he still needs. And it's helped keep him out of the hospital. Todd Bookman/WHYY hide caption

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Insurer Uses Personal Data To Predict Who Will Get Sick

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Sure You Can Track Your Health Data, But Can Your Doctor Use It?

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This sample image from Second Spectrum shows the company's data visualizations for the NBA. They crunch game data — past and present — to show live statistics and information during games. Courtesy of Second Spectrum hide caption

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New Players In The NBA: Big Data, User-Controlled Jumbotrons

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A venture capital firm is using the power of big data to target entrepreneurs before they even create startups. iStockphoto hide caption

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Fortune-Tellers, Step Aside: Big Data Looks For Future Entrepreneurs

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Surrendered handguns are piled in a bin during a gun buyback event in Los Angeles on May 31, 2014. David McNew/Getty Images hide caption

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To Counter Gun Violence, Researchers Seek Deeper Data

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Online Dating Stats Reveal A 'Dataclysm' Of Telling Trends

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Many institutions have their archives stored on CDs — but the discs aren't as stable as once thought. There is no average life span for a CD, says preservationist Michele Youket, "because there is no average disc." Sarah Tilotta/NPR hide caption

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How Long Do CDs Last? It Depends, But Definitely Not Forever

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A Google data center in Council Bluffs, Iowa. Even online privacy advocates acknowledge that keeping personal data out of the hands of third parties is virtually impossible today. Connie Zhou/AP hide caption

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If There's Privacy In The Digital Age, It Has A New Definition

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Target Co. estimates that at least 70 million individuals may have had information including their "names, mailing addresses, phone numbers or email addresses" stolen in a recent data breach. Joe Raedle/Getty Images hide caption

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Security Experts Say Data Thieves Are Getting Harder To Fight

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Cell towers are constantly tracking the location of mobile phones. And that data, federal courts have ruled, is not constitutionally protected. Steve Greer/iStockphoto.com hide caption

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Who Has The Right To Know Where Your Phone Has Been?

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Google, like Facebook, Microsoft and other Internet companies, is concerned that data requests from U.S. surveillance agencies could ultimately damage its reputation in the U.S. and overseas. Justin Sullivan/Getty Images hide caption

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Net Giants Try To Quell Users' Jitters About Their Data

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