He's basically figured the gist of it out. There's no point in backpedaling, when she's already revealed so much--both on purpose and accidentally. Besides, he shared a lot, too, hadn't he? And she hasn't made one mention of the word ISO.

"A program. Technically." That was easier than she anticipated, and she lets out a breath she didn't know she was holding. "Please don't tell anyone," she adds in a tiny voice. She doesn't want to be traced back here, back to Sam, back to everything.