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2012年10月11日,欧洲网络与信息安全局(ENISA)发布报告称,11个欧盟成员国在2011年就本国的通讯网络和服务上报了51次严重中断事故。报告指出,60%的事故影响到了蜂窝网络或移动互联网,其余事故则波及到固定电话、因特网、短信和邮件等服务。根据欧洲网络与信息安全局的报告,这些信号中断事故的主要原因是为硬件和软件故障,47%的事故由该原因引起;导致事故第二大原因是第三方故障,占33%;
On October 11, 2012, the European Network and Information Security Agency (ENISA) released a report that 11 EU member states reported 51 serious disruptions to their communications networks and services in 2011. The report pointed out that 60% of the incidents affected the cellular network or the mobile Internet, and the rest affected the fixed-line telephone, Internet, SMS and mail services. According to the report of the European Cyber and Information Security Agency, the main cause of these signal disruptions was hardware and software failures, and 47% of the incidents were caused by this cause; the second most common cause of the accidents was third-party failures, accounting for 33%