[CoastalCoder]

I think it depends. A careful reading of the classification guides might let a candidate discuss a lot of technical details.

OTOH, I'd hate to be in a position where I had to think carefully about every aspect of that stuff during an interview. Even if nobody noticed an inadvertent classified spill, it could still suck.

[SamInTheShell]

No. You may not even talk around the topics. This explicitly comes with the training. Anyone asks me about my last job, I don’t really state much more than what the job title was and what the job postings said for the role I applied to.

[CoastalCoder]

I suspect your training went beyond what the law requires, but perhaps I'm mistaken.

[bluGill]

I work with people who have worked on various classified projects in years past. Once in a while someone will mention something about the project they read in a newspaper and they have to say "It is obviously unclassified now but because I wasn't explicitly told that is was no longer classified I am not allowed to talk about it" - then they change the subject.