Air Force Updates Old Advice for New Age It used to be 'loose lips,' now it's 'loose tweets' By Michael Harthorne, Newser Staff Posted Aug 21, 2015 5:10 PM CDT 21 comments Comments Warning sent out Aug. 14 to airmen. (US Air Forces Central Command) (Newser) – Just as soldiers were warned "loose lips sink ships" during World War II, modern airmen are being warned "loose tweets destroy fleets" in the social-media age. ABC News reports US Air Forces Central Command sent out a security notice last week warning personnel of the "fine line" between sharing activities with friends and family and providing harmful information to enemies. The military is getting increasingly concerned about tech-savvy terrorist groups. In the notice, one official specifically worried about "ISIS sympathizers" and "lone wolves" using social media to find and harm military personnel and their families. For instance, a group calling itself the Islamic State Hacking Division released a "kill list" of 100 military members and their families seemingly compiled using information readily available on social media in March. In the release, the Air Force warns airmen not to post information about their mission or too many personal details while keeping their social media accounts "friends only." The Navy and Army also are hammering home the "loose tweets" message, notes Stars and Stripes.