Well, a lot of right wing news services say this all the time, and even the more "liberal " press has repeated the claim that someone was in danger because of the recent wikileaks disclosures.
However, it doesn't seem as if that's the case. It's more likely that this is part of an attempt to marginalize wikileaks, and draw attention away from some of the deceptions revealed in the leaked documents.
The only people who are in danger are those who insist that the deceptions and frauds by military, political and diplomatic personnel are necessary to the governance of our societies.
What's been very clear, is that these lapses in ethics are contributing a great deal to the misery of our current world conflicts and we would be better off if this wasn't the standard practice of governments.