An Iranian woman shops at a supermarket in the capital, Tehran, on Feb. 22. International sanctions have hurt Iran's economy, but prospects for a breakthrough on Iran's nuclear program are dim as negotiators meet in Kazakhstan. Behrouz Mehri/AFP/Getty Images hide caption

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Some companies, frustrated with intrusions into their networks by cyberattackers, are now trying to turn the tables in the ongoing and complicated cyberwar. hide caption

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An analyst looks at code in the malware lab of a cybersecurity defense lab at the Idaho National Laboratory in Idaho Falls, Idaho, Sept. 29, 2011. Jim Urquhart/Reuters/Landov hide caption

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Homeland Security analysts watch for threats to U.S. technological infrastructure at the National Cybersecurity and Communications Integration Center. Jim Watson/AFP/Getty Images hide caption

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John Brennan, the deputy national security adviser for Homeland Security and Counterterrorism, speaks at the White House in January. Brennan is President Obama's choice for CIA director. Carolyn Kaster/AP hide caption

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Egyptian President Anwar Sadat is flanked by senior military officers as he reviews maps of battlefield developments in the 1973 Arab-Israeli War. He's shown at army headquarters in Cairo on Oct. 15, 1973. Egypt and Syria attacked Israel, catching Israel and the CIA off-guard. AP hide caption

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Militants attacked Algeria's In Amenas gas field last week. Thirty-seven foreigners, including three Americans, were killed in the subsequent raid by Algerian security forces. BP/AP hide caption

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A photo from Aug. 15, 2012, supplied by the Institute for Science and International Security, shows buildings at the Parchin military base south of Tehran, Iran, shrouded in pink tarps. It's believed to be an effort to stop the U.N nuclear agency from monitoring the site, which is suspected of being used for secret work on atomic weapons. ISIS/AP hide caption

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John Brennan speaks in the East Room of the White House on Monday, after President Obama announced his nomination of Brennan to run the CIA. Obama also announced his choice of former Sen. Chuck Hagel (left) to head the Department of Defense. Brendan Smialowski/AFP/Getty Images hide caption

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This monitor screen image shows a graphic of the orbit of the satellite carried by the Unha-3 rocket, which North Korea launched this week. The image is from the Korean Central News Agency, distributed in Tokyo by the Korea News Service. AP hide caption

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The National Intelligence Council's Global Trends 2030 report predicts that by the year 2030, a majority of the world's population will be out of poverty. iStockphoto hide caption

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