VM Test Instance Credential Isolation
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Solution Overview
Problem
In cloud environments where developers cannot use their own machines for testing, the creation of virtual machine (VM) test instances for reproducing issues or testing functionality is often done without adequate security considerations, making them vulnerable to malicious exploitation.
Innovation Solution
The system generates VM test instances within a virtual machine scale set, assigns unique credentials stored in a separate secret store, and provides these credentials to users for a limited time. Upon expiration or user request, the VM test instances and credentials are destroyed, enhancing security by limiting access and data retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If VM test instances are created without security considerations to enable testing functionality, then ease of operation is improved, but security against malicious exploitation deteriorates
Solution Approach 1:
The patent segments credentials into unique, instance-specific credentials stored in a separate secret store, rather than using shared credentials. Each VM test instance receives its own credentials that are isolated from others, preventing lateral movement if compromised. This segmentation maintains ease of operation by automatically managing credentials while improving security through isolation.
Solution Approach 2:
The patent implements disposable credentials that are automatically destroyed when the VM test instance is destroyed. These short-lived credentials minimize the window of opportunity for malicious exploitation while maintaining ease of operation through automated credential lifecycle management. The credentials are inexpensive to generate and destroy, enabling frequent rotation without operational burden.
2Productivity
If VM test instances are created for testing purposes then productivity is improved, but security risk increases due to potential exploitation
Solution Approach 1:
The patent performs preliminary security actions by storing unique credentials in a secure secret store before the VM test instance is even created or accessed. This pre-established security infrastructure enables rapid provisioning of test instances for productivity while ensuring credentials are already secured and isolated, reducing security risk from the outset rather than adding controls later.
Solution Approach 2:
The patent implements automatic discarding of credentials when VM test instances are destroyed, eliminating security risks associated with abandoned test instances. The systematic destruction of both VM instances and their associated credentials ensures that compromised or obsolete test instances cannot be exploited later, while the process is automated to maintain productivity without manual intervention.
3Reliability
If unique credentials are stored separately from other credentials then security is improved, but device complexity increases
Solution Approach 1:
The patent employs a universal secret store infrastructure that serves multiple purposes: storing unique VM test instance credentials, managing credential lifecycles, and providing secure access control. This multi-functional approach improves security through centralized management while reducing complexity by eliminating the need for separate security systems for each function, as the secret store handles all credential operations uniformly.
Data Source
AI summary
A virtual machine (VM) test instance is created in a virtual machine scale set. When the VM test instance is created, a unique set of credentials is also created corresponding to the VM test instance. The unique set of credentials is stored in a secret store that is separate from other cloud and organization credentials. When access to a VM test instance is requested by a user, the unique credentials are provided to the user to use the VM test instance for a limited time. When the user is finished using the VM test instance, or when the VM test instance expires, then the VM test instance is destroyed and the unique credentials are also destroyed.


