After killing Osama bin Laden, the SEALs reportedly took hundreds of drives, disks, and computers from the house in Abbottabad, Pakistan. What challenges will American intelligence agencies face in exploiting bin Laden’s computers and what can be learned from the computer of a terrorist mastermind? SPY Historian Mark Stout discusses the complexities of digital dumpster diving with Wall Street Journal reporter Alan Cullison, who in 2001 purchased and exploited a computer used by Ayman al-Zawahiri, now the heir apparent to lead al Qaeda. Part two of a series.