在金融证券、能源交通、电信运营商、钢铁汽车等大中型机构所面临的外部入侵事件当中,大约80%以上的病毒、蠕虫、垃圾邮件、木马程序、间谍软件、拒绝服务攻击等安全事件是从企业网络和互联网的接口进入到各大企事业单位的内部网络的。 About 80% of the external incidents faced by large and medium-sized organizations such as financial and securities, energy transportation, telecom operators and steel and steel enterprises are all security incidents such as viruses, worms, spam, trojans, spyware and denial of service attacks From the enterprise network and the Internet into the major enterprises and institutions of the internal network interface.