F-16 Fighting Falcons taxi down the flight line at Kunsan Air Base, South Korea, on Dec. 14, 2012. The U.S. Air Force is using the photo to promote careful use of social media, with the message: "Loose Tweets Destroy Fleets." The phrase is a modern-day twist of the words from a famous World War II propaganda poster, "Loose Lips Sink Ships." 
 
 “Loose Tweets Destroy Fleets” — the Air Force’s twist on the famous World War II slogan, “Loose Lips Sink Ships” — is meant to remind servicemembers to guard what they share on social media, particularly given recent threats by Islamic State sympathizers. 
 
 U.S. Air Forces Central Command’s online message last week from Al Udeid Air Base, Qatar, included a photo of a fleet of F-16 fighter jets parked on a runway. It was accompanied by a story reminding airmen “there is sometimes a fine line between letting your friends see what you’re up to and providing an adversary critical information about your connection to the military and its mission.” 
 
 The AFCENT article speaks directly to the threat posed by Islamic State supporters, who on at least two occasions have acquired and posted online personal data of military personnel, urging followers to attack Americans in the States and overseas in retaliation for the air strikes. 
 
 “As social media keeps evolving and there’s more and more avenues to let your friends and family know what you are up to, those same avenues can be used by ISIS sympathizers, ‘lone wolves’, to track down and hurt our military members outside the safety of the base,” AFCENT’s Force Protection chief, Capt. Jonathan McDonald, was quoted as saying. He used an acronym for the Islamic State. 
 
 Most recently, a group calling itself the “Islamic State hacking division,” posted the names and identifying information such as email addresses and phone numbers of some 1,400 former or current military and diplomatic personnel who worked in the United Kingdom, according to London’s Sunday Times. Most of them were Americans, though much of the information was believed to be outdated. 
 
 Air Force tips to post smartly include the use of appropriate privacy settings and checking with a supervisor before posting anything work-related; also encrypting email about work missions, using a secure phone line and shredding important documents. 
 
 The “loose tweets” catchphrase is not new, having been adopted earlier by the Navy and Army. 
 
 Before the carrier USS Theodore Roosevelt deployed earlier this year to support airstrike operations in Iraq and Syria, the ship reminded sailors on Facebook to “Remember: Loose Tweets Sink Fleets.” Sailors were told to be aware of what they’re posting, what hashtags they’re using and what security settings are enabled. The Army used the phrase even sooner. In December 2013, U.S. Central Command tweeted the same message, linking to a U.S. Army online story about social media usage titled: “Loose lips still sink ships, loose tweets sink fleets.” 
 
 But the Air Force’s twist on the message has been garnering attention from news organizations as diverse as Popular Mechanics and Russia News.Net and has been getting mixed reviews on social media. 
 
 “’Loose lips sink ships’ has evolved,” said one commenter on the John Q. Public Facebook site. “Probably more relevant now than in the 1940s.” 
 
 Another commenter quipped: “Hey Air Force. The Navy called, they want their slogan back.” 
 
 svan.jennifer@stripes.com ||||| The military is warning about 100 service members about an online threat by a group purportedly affiliated with ISIS that has posted their alleged personal details and called on sympathizers to take violent action against them. 
 
 U.S. officials say the military services are notifying the families of the individuals named on the list. 
 
 On Saturday, a previously unknown group identifying itself as the "Islamic State Hacking Division" posted on a website the names, photos and home addresses of 100 American service members it said were involved in the U.S. airstrike campaign against ISIS in Iraq and Syria. 
 
 It said it did so to enable lone wolf sympathizers to kill those named on the list. 
 
 U.S. officials said they were aware of the list and were looking into it. 
 
 "I can't confirm the validity of the information, but we are looking into it," a Defense Department spokesperson said. "The safety of our service members is always a concern." 
 
 A law enforcement official told ABC News that the FBI is aware of the post and "monitoring" the situation. 
 
 Defense officials said the military services were contacting the families of the individuals included on the list. 
 
 "The Air Force is cooperating fully with DOD on this matter," Air Force spokeswoman Lt. Col. Holly Slaughter said. "The Air Force is taking the appropriate steps to make sure that everyone who needs to know is notified. As always, force protection is a primary concern." 
 
 "Naval Criminal Investigative Service is looking into the matter for the Navy and is taking the appropriate steps to ensure that everyone is notified," said a defense official. 
 
 Marine Corps spokesman Lt. John Caldwell said NCIS is conducting in-person notifications to the Navy and Marine personnel regarding the currently unverified threat/data breach. 
 
 "It is recommended Marines and family members check their online/social footprint, ensuring privacy settings are adjusted to limit the amount of available personal information," Caldwell said. "Vigilance and force protection considerations remain a priority for commanders and their personnel worldwide." 
 
 The hacking group claimed it compiled the list from military records, but it appears the photos and information may have come from information available on social media sites or public records. Some of the names appeared in official Defense Department articles about the war on ISIS or other unrelated operations. 
 
 Over the past year the military services and regional commands have taken steps requesting its personnel be prudent and limit the amount of personal information posted on social media sites. 
 
 ABC News' Mike Levine contributed to this report.
– 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.