The security threats facing cloud computing mainly include the following: data leakage: cloud service providers may be hacked or insiders may steal sensitive data, leading to the leakage of important corporate information. Virtualization Vulnerabilities: Virtualization technology, as the core technology of cloud computing, may have vulnerabilities such as virtual machine escape and network isolation failure, enabling attackers to attack across the virtualization hierarchy. Business interruption: Cloud service providers may cause business interruption due to hardware failure, natural disasters or malicious attacks, bringing losses to enterprises. Bandwidth exhaustion: Through attacks such as DDoS, attackers can consume the network bandwidth of the cloud service provider, resulting in legitimate users being unable to access cloud services. Authentication and authorization issues: Since cloud resources are shared, attackers may use identity forgery and other means to gain access to others and then access sensitive data. Improper configuration: Cloud service providers may cause security breaches and data leakage due to mismanagement or improper configuration. In order to deal with these cloud computing security threats, enterprises need to take a series of security measures, such as data encryption, authentication and privilege control, monitoring and auditing. At the same time, enterprises also need to choose a safe and reliable cloud service provider and establish a good cooperative relationship with it to jointly safeguard enterprise information security.