(Telecompaper) British Prime Minister David Cameron and US President Barack Obama will announce a rolling programme of transatlantic cyber war games to be conducted by UK and US intelligence agencies to test their systems' resilience to cyber-attacks, reports the Guardian. The two heads of government began two days of talks in Washington on 15 January. As a first step, a simulated attack will be targeted later this year at banks in the City of London and Wall Street. The war games against the financial sector will be co-ordinated by a new joint cyber-cell to be established by GCHQ, MI5, the NSA and FBI. Cameron said before the talks, "The joint exercises and training of our next generation of cyber-experts will help to ensure that we have the capability we need to protect critical sectors like our energy, transport and financial infrastructure from emerging threats." Cameron will also press his counterpart on putting more pressure on internet giants such as Twitter and Facebook to increase their cooperation with intelligence agencies seeking to monitor terror suspects' communications. Earlier this week he outlined plans to strengthen the legal framework to allow agencies to tap encrypted communications.