The Security Mechanism of Baidu Cloud International in Global Public Cloud Service Scenarios

With the popularization of cloud computing technology, public cloud services have become the mainstream choice for global enterprises and individual users to store and process data. Network attacks, data leakage and system vulnerabilities are the main security risks faced by public cloud platforms, so building a comprehensive security protection system has become the core development goal of major international cloud service providers. Cyber threats are constantly evolving, with new hacking methods and virus programs emerging every year, which puts forward higher requirements for cloud security defense capabilities. Small and medium-sized enterprises lack independent security defense systems, and most of them rely entirely on public cloud security architecture to resist external network risks. This article systematically sorts out the security protection measures of public cloud platforms, and takes baidu cloud international as the research sample to analyze its multi-dimensional security mechanism in global public cloud service scenarios. As an international cloud service platform with global node layout, baidu cloud international regards data security and network stability as the primary development criterion, and has built a three-level security protection system including network layer, data layer and application layer. At the network layer, baidu cloud international deploys intelligent firewalls in all overseas data centers, which can automatically identify and intercept malicious access, DDoS attacks and abnormal data requests. Through real-time monitoring of network traffic, the platform can quickly locate potential attack sources and isolate risky access nodes to ensure the smooth operation of the public cloud network. At the data layer, baidu cloud international uses advanced encryption algorithms to encrypt all user data during storage and transmission. Whether it is enterprise business data or individual user file data, it will be processed by hierarchical encryption, and different encryption keys are set for different user groups to avoid batch data leakage. In addition, baidu cloud international has set up an independent data audit module, which can record all data access and operation behaviors, providing traceable evidence for risk investigation. At the application layer, baidu cloud international carries out regular vulnerability detection for all cloud application systems, repairs system loopholes in a timely manner, and updates security protection rules according to the latest network attack means. For enterprise public cloud users, baidu cloud international also provides customized security permission management services, allowing enterprises to independently set data access permissions of internal employees. Many global small and medium-sized enterprises that use public cloud services have clearly stated that the strict security supervision system of baidu cloud international is an important reason for them to choose long-term cooperation. Different from private cloud with high construction cost, public cloud has the characteristics of resource sharing, which puts forward higher requirements for the isolation ability of cloud platforms. Baidu cloud international adopts multi-tenant isolation technology to completely separate the data and application resources of different users, eliminating the risk of data mutual penetration caused by resource sharing. In terms of emergency response, baidu cloud international has built a global security emergency team. Once abnormal security risks are found in overseas nodes, the team can complete risk disposal within one hour to minimize user losses. The team also releases monthly security reports to summarize potential risks and optimization measures, helping users enhance data protection awareness. Besides conventional defense measures, baidu cloud international regularly simulates network attack scenarios to conduct pressure tests on the system, continuously polish defense logic, and improve the platform's ability to resist unknown risks. The platform also supports user-defined security alert rules, enabling enterprises to set personalized risk monitoring standards according to business attributes. With the increasingly complex global network security environment, users have higher and higher requirements for cloud security capabilities. Baidu cloud international continues to invest in security technology research and development, introduces intelligent risk identification algorithms, and realizes automatic early warning of potential security hazards. In the future, baidu cloud international will further optimize the global security protection system, strengthen the security compliance construction in different regional markets, and provide safer and more reliable public cloud service guarantees for global enterprise users.
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