Many enterprises, fearing the spreadof malware and the loss of productivity, data and money, have clamped down on use of social media networks in the workplace..
许多企业由于担心恶意软件的传播以及生产率、数据和金钱的流失，禁止在工作场合使用社会化媒体网络。
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Messrs Oliner, Sichel and Stiroh show that productivity growth was spread more broadly across industries and was partly the result of the reallocation of resources between firms.