A soldier participates in a military exercise conducted by Georgians and U.S. Marines together on Friday. As the U.S. faces cuts to military spending, it's hoping to share more of its defense burden with European allies. Shakh Aivazov/AP hide caption

itoggle caption Shakh Aivazov/AP

In some cases, hackers may be seeking to gain access to a company's computer network simply to have it as a base of operations during a future conflict. iStockphoto.com hide caption

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A still image from video footage released by the U.S. Department of Defense shows Osama bin Laden watching himself on TV. Rex Features/AP hide caption

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Information obtained by interrogating suspected al-Qaida members imprisoned at the detention center in Guantanamo Bay, Cuba, helped lead the U.S. to Osama bin Laden. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images