On September 9, 2026, Microsoft introduced a framework called Cloud Web Applications Threat Matrix to organize threats targeting cloud-hosted web applications and serverless platforms. The framework is based on MITRE ATT&CK’s approach to classifying adversary tactics, but focuses on attack paths that cross the boundaries of the application, the managed runtime environment, workload identities, development and deployment pipelines, and connected cloud resources.
Microsoft says that examining the application layer and cloud platform separately can leave gaps in understanding an attack. For example, a breach may begin with a code repository or an exposed administrative interface, then move to a managed identity, database, or storage service connected to the application. The framework was therefore designed to give security teams a shared view of attack stages and help them determine what their monitoring tools can and cannot see.
What Does the Framework Cover?
The framework divides techniques into 11 tactics, including resource development, initial access, execution, persistence, privilege escalation, defense evasion, credential access, discovery, lateral movement, collection, and impact.
Among the examples Microsoft discusses are subdomain takeover after a cloud service is deleted while its DNS record remains, injecting code into a repository linked to automated deployment, planting a malicious container image in a private registry, and exploiting exposed management interfaces. The framework also addresses injecting serverless function triggers through specially crafted files or messages, and using deployment credentials to access application management interfaces or modify its files.
Other techniques include exploiting remote code execution vulnerabilities, using modules such as Kudu in Azure App Service, modifying scheduled tasks or source code to maintain access, and abusing valid cloud accounts. Microsoft also warns about accessing workload identity tokens through metadata interfaces, as well as reusing connectors that maintain authenticated sessions with external services.
Risks Go Beyond Data Theft
The framework does not limit impact to traditional compromise. It addresses disabling cloud logging or changing log-retention policies, extracting secrets from environment variables and configuration files, and accessing application databases and logs. Detailed logs may contain keys, personal data, or internal paths that assist in subsequent attacks.
The framework also lists operational and financial risks, such as deleting data or defacing website content, and abusing autoscaling to increase the bill in what Microsoft calls Denial of Wallet, in addition to hijacking computing resources for mining, large-scale scanning, or relaying traffic.
What Changes in Practice for Security Teams?
The practical value lies in shifting security review from asking “Is the application protected?” to examining the entire chain of trust: from the repository and build pipeline to the runtime environment, identity, and connected services. Microsoft recommends enforcing multifactor authentication, applying the principle of least privilege to users and workloads, and restricting access to applications, deployment environments, and sensitive resources.
It also calls for protecting repositories and build systems, using packages and extensions from trusted sources, and not storing reusable credentials in code or configuration files. Priorities include centralizing security logs in protected locations, preventing changes to logging settings, setting quota, concurrency, and financial-alert limits, and testing backup and recovery plans.
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The real development here is not the launch of a new product, but the provision of a unified model for connecting application risks with the risks of the cloud on which it depends. This matters for teams managing applications distributed across multiple repositories, deployment pipelines, identities, and services. However, the framework remains a tool for organizing threats and prioritizing defense, not proof that an organization has complete coverage of every technique. Its effectiveness will also depend on the availability of appropriate logs, permissions, and measurements in each environment—an issue that publishing the matrix alone does not resolve.