Days after Navy contractor Aaron Alexis murdered 12 people during a shooting rampage at the Washington Navy Yard on Sept. 16, 2013, Pentagon officials acknowledged they had neglected to follow up on a Rhode Island police report the previous month showing that Alexis, who died in a shootout with police, had complained of hearing voices. That turned out to be just one of many red flags in Alexis’ background that Navy officials and security clearance investigators were not aware of prior to the tragedy. Since then, officials have worked to significantly strengthen the way clearances are granted and managed. For more, click here.

What do you think about using of software programs to more thoroughly vet employees and contractors? What about continuously monitoring those who hold security clearances using social media? Are the such risks to privacy justified by the results?