President Obama has appointed an anti-terrorism expert to minimise the damage from the release of highly sensitive American documents on the whistle-blowing Website, the WikiLeaks. The expert, Russell Travers, will try to find out how thousands of secret files were taken from Government Internet files. President Obama is eager to avoid a repeat performance. Russell Travers will review the ways the Government shares confidential information and who has access to it. In a separate development, WikiLeaks has confirmed that its website is no longer being posted on servers owned by the online shopping company, Amazon. The U.S. government is working to prevent future spills of U.S. secrets like the release of thousands of classified documents by WikiLeaks. Officials said that the State Department has cut off the military's access to its database of diplomatic cables in an attempt to prevent another data leak. Officials suspect a former intelligence analyst with access to the military's classified network – known as SIPRNet, or the Secret Internet Protocol Router Network – was the source for the leaked documents. The United States has condemned the WikiLeaks release of more than a quarter-million sensitive U.S. diplomatic cables. The website has not identified the source of the documents. A U.S. Army intelligence analyst, Bradley Manning, was arrested earlier this year and is in military custody awaiting trial for allegedly leaking a 2007 video of a helicopter strike in Iraq and classified diplomatic cables to WikiLeaks.