Wired's Noah Shachtman writes about the deliberate release of information about frequency jamming technology (specifically designed to jam IED remote detonations). Wikileaks published the information including the freqs we can jam.
...A few days later, one of those jammers seemed to save me and him from getting blown up. Months after that, David Axe was thrown out of Iraq by the U.S. military, for a blog post which mentioned the Warlock family of jammers.
So I was more than a little surprised, when I saw that Wikileaks had posted a classified report, outlining how the Warlock Red and Warlock Green jammers work with -- and interfere with -- military communications systems...
I think it's safe to say that THAT information should never be published.