近期苹果公司数据泄露问题凸显,云计算安全成了热门领域. 在多人共享资源的情况下,基于网络服务存在一个负面的问题,即用户数据在网络上的隐私与安全问题. 事实上,作为目前公认的最大阻碍因素,数据的隐私性和安全性问题给云计算的发展与推广提出了巨大的挑战. 在云计算安全中,频繁出现的虚拟机动态迁移中的安全隐患更是不容忽视. 文中就云计算环境中虚拟机动态迁移中涉及安全的相关问题展开研究,重点分析了云计算环境下动态迁移中虚拟机容易受到攻击的几个方面. 在云计算环境下对虚拟机实施动态迁移,如果不加以安全保护,迁移过程可能会受到网络攻击. 通过实验验证了迁移中网络攻击的存在,从而证实了目前云计算环境下虚拟机动态迁移过程中存在安全隐患. 针对这种攻击,分析讨论了防御方案.%Apple recently highlighted the issue of data leakage,the security has become a hot area of the cloud computing. Network serv-ices share the negative side,the issue of user data privacy and security. Actually,as the most widely known concern of cloud computing, user data privacy and security imposes a grand challenge for development and popularity of cloud computing. In cloud computing securi-ty,the security risks of frequent live migration of virtual machines cannot be ignored. The issues related to security of live migration of virtual machines in cloud computing environments are studied,focusing on several aspects vulnerable to attack for virtual machines of live migration in cloud computing environment. In the cloud computing environment for the implementation of virtual machine migration,if not to protect the security,migration process may be attacked by the network. Experiment verifies the existence on migration of attack, thus confirming the existence of security risk of current cloud computing environment virtual machine live migration process. In response to this attack,defense programs are analyzed and discussed.
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