BBC地平线：网络攻击-国家医疗服务系统瘫痪之日 HD
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BBC地平线：网络攻击-国家医疗服务系统瘫痪之日 视频信息
A few weeks ago, the National Health Service was hit by a widespread and devastating cyber attack -
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A few weeks ago, the National Health Service was hit by a widespread and devastating cyber attack -
