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To understand all further references in this document, the Azure Hierarchy as well as the basic principles of Azure Entra ID (and its permissions) have to be understood.
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Data exfiltration in general (someone or Unique extracting/stealing data of any classification but naturally mostly classified data)
Data exfiltration via the Kubernetes Data Plane
Data exfiltration via Privileged Roles
Misconfiguration of Cloud Resources
Over-Provisioning or cost escalations
Security vulnerabilities in third-party application applications which could also result in data exfiltration
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Unique always uses and means to advice to use PIM and does not repeat that statement in every chapter and section. PIM and PIM only! |
Reference
Overall concept
Uniques Unique's reference architecture bases is based mainly on two key concepts from Microsoft:
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More control over incoming changes
Fewer if not minimal lateral movement risks
A tight grip on the principle of least privilege as no human needs privileged access anymore except in escalations
An easy to get audit trail
A modern-day approach to collaboration
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Note that the more the client automates, the less fewer of the roles and permissions outlined below are needed. How much of the setup is automated from the client side also has a pricing and timeline impact as human actions always take longer than those of machines.
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This separation targets primarily https://unique-ch.atlassian.net/wiki/spaces/PUB/pages/445972604/Reference+Architecture+CMT#Risk-based-approach and is not only decoration.
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Unique advises segregating resources at a resource group level using the following groups:
Group | Content | High-level permissions |
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Main | Primary resources needed to run | The responsible party (can be Unique or the client, see Responsibilities) mostly works within this resource group if ever. |
Sensitive | All customer data which mainly consists of prompts and files, all the embedding of uploaded files, and encryption keys. | Unique should have the least possible privilege (and only JIT) of to this group. Actually, no human should have too much access to this, see Automation. |
Audit | CentralisedCentralized, tamper-safe audit logs of | Unique and their workloads can only one-way emit into this resource group, there is no way to read. Modifications to this resource group should preferably only be made by the client or via Automation. |
Vnet | Networking setup, whereof where some limited internet access is needed to pull the content of https://unique-ch.atlassian.net/wiki/spaces/PUB/pages/436536544 | Naturally, most clients prefer to administer this part of the infrastructure themselves as it has a colossal security impact, if Unique should take care of it, the Automation approach is recommended above all manual actions. |
Terraform | Store terraform states. | Few individuals with a specific role or the Automation should have access to this group as here the state of the whole infrastructure gets saved. |
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The content of the main group, primarily based on https://learn.microsoft.com/en-us/azure/architecture/reference-architectures/containers/aks-pci/aks-pci-ra-code-assets. Besides the Infrastructure requirements, some more resources are recommended to be deployed in order to run 
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Roles
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To understand the content of this section, https://learn.microsoft.com/en-us/azure/role-based-access-control/custom-roles must be read and understood. |
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Author | See Parent |
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