________________________________________. U.S. Defense Secretary Leon Panetta says recent computer virus attacks on Persian Gulf oil and gas companies were probably the most destructive cyber assault the private sector has seen.美国国防部长Leon Panetta称,近期针对波斯湾石油天然气公司的计算机病毒攻击,可能是目前为止私人公司遭受的最具破坏性的网络攻击.
Security was tight with more than 2000 police and military guarding the service after police earlier this week reported a threat of attack on dignitaries of that event.