Can anybody think of a military leak that damaged or had the potential to damage national security?

Can anybody think of a military leak that damaged or had the potential to damage national security, besides the recent Wikileaks Afghanistan war reports?Can anybody think of a military leak that damaged or had the potential to damage national security?Yes, look up John Walker. He basically gave the Russians our entire ASW plan, and then the Russians all of a sudden develop the Typhoon IV which had the US in a panic, because it had systems to defeat all of our countermeasures. He also revealed information that the US had tapped into an undersea phone cable and was eavesdropping on Soviet conversations. He did all of this for about $10,000.00Can anybody think of a military leak that damaged or had the potential to damage national security?Yes, I can think of a few media leaks and a few security violations that damaged our national security or at least actual U.S. Soldiers. I'm not going to discuss the details for obvious reasons - operations are still ongoing. Just understand that lives are literally at stake when people so casually discuss military and intelligence information in the open. Loose lips may not sink ships anymore, but they do get patrols of U.S. servicemembers blown up.Can anybody think of a military leak that damaged or had the potential to damage national security?There were tons of them during the Cold War, and its not hard at all to find them. Spend 20 seconds on Google honestly.