A federal grand jury accused Michael Derring, 48, and Tina White, 47, on Wednesday of conspiracy and aggravated identity theft, alleging they stole personal information including the Social Security numbers of dozens of TSA workers at Boston's Logan International Airport. While there was no indication the information was passed to any militant group that might be planning an attack, the case suggests federal officers are vulnerable to identity theft. The TSA is part of the U.S. Department of Homeland Security.