I saw this article on Army.mil today. I usually take what they say lightly, but I thought this was actually a good summary. I've noticed quite a few questions about OPSEC and PERSEC, and I thought this might be helpful, especially when the concept is hard to explain to friends and family. It spells things out clearly. So I thought people might want to pass it on to family, friends, or posters with questions. I do find it slightly ironic that Army.mil has a link to all there social media sites on their homepage