But the point is using dead drops doesn't attract attention unless you already have it. > I agree number stations are overkill but perhaps some similar methods

But the point is using dead drops doesn't attract attention unless you already have it. > I agree number stations are overkill but perhaps some similar methods...like cartels using email drafts to communicate That's basically a digital dead drop, and they've caught people doing that: for instance: https://en.wikipedia.org/wiki/Petraeus_scandal#Summary_and_chronology https://en.wikipedia.org/wiki/Petraeus_scandal#Summary_and_c...