According to this long interview post-Jan 20 with the former Secretary of Agriculture, FSA computers are his top concern. "An ongoing effort to get funding FSA computer revamping is just one of the issues of unfinished business when Schafer cleaned out his office Jan. 16. Security for the inauguration was using USDA offices because they’re directly on the National Mall."
I think the article errs on one point--last I knew the Secret Service doesn't protect cabinet secretaries. Which isn't to say they don't have security personnel, they do and Newt Gingrich fussed about it 15 years ago.