“Think before you share. Posting is permanent. Remember anything you publish could be re-shared or screen grabbed.”The list of advice is based on what troops should know when creating a regimental social media page and sharing information online. The Army has special cyber protection teams, but the advice to soldiers is seen as a new line of defence. Think before you share. Posting is permanent. Remember anything you publish could be re-shared or screen grabbed The advice also says: “Take a moment to check that your post falls in line with your unit’s social media objectives – and never share anything that could breach operational or personal security. “Don’t fire and forget. Check responses and comments and be prepared to answer and moderate them as quickly a possible. But be accurate – if you don’t know the answer to a questions find out. Most importantly do not get drawn into an online confrontation.”It also advises soldiers to “get permission” from chain of command when sharing music, videos or imagery.During the Second World War, the “Careless Talk Costs Lives” propaganda discouraged people talking about sensitive material where it could be overheard by spies.It was also intended to prevent morale-sapping rumours from spreading. The guidelines is an update on WW2 propagandaCredit:Imperial War Museums Social media is the new pillow talk, the Ministry of Defence has warned troops in new online guidance.Soliders are being advised not to take part in careless chatter on Facebook and Twitter as it stepped up efforts in the ongoing cyber war.The MoD-approved Soldier magazine has released a new updated safety guide based on the old war time “Careless Talk Costs Lives” campaign, titled “Pause before you post”.The advice includes: “Stay secure. Familiarise yourself with the security settings for each social media account you are using. “Change passwords regularly and be aware of what information you may inadvertently be revealing when you tag or share something, especially when it comes to location services and geo-tagging.” Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.