Network access control is to ensure that the cyber source is not illegal, is the main strategy of network security and protection.
入网访问控制是保证网络资源不被非法使用， 是网络安全防范和保护的主要策略。
Russia is at the centre of concern in Brussels about cyber security, but the commission declined to comment on the suspected source of attacks.
俄罗斯处于欧盟对网络安全担忧的中心，但欧盟委员会拒绝就可疑的网络攻击来源发表评论。
Investigators say they are closing in on the source of the cyber attacks that hit a number of US companies, including Google, according to reports.
据报道称，调查人员已查出袭击美国公司(包括谷歌)黑客来源。
Investigators say they are closing in on the source of the cyber attacks that hit a number of US companies, including Google, according to reports.
据报道称，调查人员已查出袭击美国公司(包括谷歌)黑客来源。
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