How to understand cloud security?

Because the security issues of cloud computing involve a wide range, this paper mainly introduces several aspects:

User identity security issues

Cloud computing provides flexible IT services through the network. Users need to log in to the cloud to use applications and services, and the system needs to ensure the legitimacy of user identity before providing services. If the illegal user obtains the user identity, it will endanger the data and business of the legitimate user.

* * * Enjoy commercial safety issues.

The underlying architecture of cloud computing (IaaS and PaaS layers) realizes resource sharing and calling through virtualization technology, which has the advantage of high resource utilization. However, sharing will introduce new security problems, on the one hand, it needs to ensure the isolation of user resources, on the other hand, it needs the security protection strategy of virtual objects such as virtual machines, virtual switches and virtual storage, which is completely different from the traditional hardware security strategy.

User data security issues

The security of data is the most concerned issue for users. Generalized data includes not only the customer's business data, but also the user's application program and the user's entire business system. Data security issues include data loss, leakage, tampering and so on. In the traditional IT architecture, data is "close" to users, and the closer data is to users, the safer it is. However, under the cloud computing architecture, data are often stored in data centers far away from users, so effective protection measures are needed for data, such as multiple copies and data storage encryption, to ensure data security.