Agent Identity Blueprint<\/strong><\/td>\n| The template from which concrete agent identities are created<\/td>\n<\/tr>\n | \nBlueprint Principal<\/strong><\/td>\n| The security anchor of the template within the directory<\/td>\n<\/tr>\n | \nAgent Identity<\/strong><\/td>\n| The identity of a specific, running agent<\/td>\n<\/tr>\n | \nAgent User<\/strong><\/td>\n| An optional user-like identity per agent identity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n Source: Microsoft Learn on Microsoft Entra Agent ID, as of May 2026.<\/p>\n Using the blueprint, an agent can generate one or more agent identities, optionally each with its own Agent User identity. This is precisely where security teams need to pay close attention. A single template can spawn multiple identities \u2013 each of them a distinct account in the directory.<\/p>\n The New Class of Accounts No One Is Counting<\/h2>\nNon-human identities \u2013 identities without a person behind them \u2013 are nothing new. Service accounts, workload identities, and API keys have accompanied security teams for years. What’s new is the pace. A service account is deliberately created, usually via a formal request. An agent identity, by contrast, comes into existence as soon as someone builds and activates an agent.<\/p>\n This shifts the scale challenge. Where departments once managed just a handful of service accounts, within months of agent deployment, dozens of agent identities may populate the directory \u2013 each with its own set of permissions. If the blueprint generates multiple identities per agent and each can optionally have an Agent User, the numbers multiply further.<\/p>\n Field experience is clear: any organization that doesn\u2019t maintain an up-to-date inventory of agent identities will lose oversight within a single quarter. This inventory isn\u2019t optional \u2013 it\u2019s the essential foundation for being able to identify, during an incident, which non-human accounts exist and which one is currently behaving suspiciously.<\/p>\n Where the Agent Account Becomes a Security Risk<\/h2>\nThe most sensitive of the four object types is the agent user. A user-like identity for an agent is practical because it allows the agent to operate within systems designed for human users. Yet it’s risky for the exact same reason. An account that behaves like a user can also accumulate user-like permissions.<\/p>\n The classic privilege escalation pattern applies directly. An agent gains access to a system for an initial task. For the next task, a second access is added, then a third. Old permissions are never revoked because the agent is still running. After a year, the agent identity has accumulated a combination of rights no one consciously granted. If this agent is compromised \u2013 say, through manipulated input \u2013 the attacker gains full access to that entire permission set.<\/p>\n The implication is clear: agent identities with broad access must be treated the same as privileged user accounts. They require regular permission reviews, adherence to the principle of least privilege, and ideally, time-limited access grants instead of permanent ones. Entra Agent ID provides the tools for this, as agents can be assigned the same access policies as humans. But these tools only work if teams actively apply them to agent accounts.<\/p>\n Credential Lifecycle for Non-Human Identities<\/h2>\nA human account follows a clear lifecycle: it’s created upon onboarding, adjusted during role changes, and disabled upon departure. Departure is the most critical moment, as it closes the account. With agent identities, this moment is often missing \u2013 because agents don\u2019t resign.<\/p>\n This is precisely the silent gap. An agent is built for a project; when the project ends, the agent keeps running or at least remains in the directory. Its identity, credentials, and permissions stay active. From an attacker\u2019s perspective, a forgotten but still-privileged agent identity is an ideal target: functional, authorized, and unmonitored.<\/p>\n Therefore, the lifecycle for agent identities needs a defined endpoint. Every agent identity should have an expiration date or mandatory review requirement. An identity whose associated agent has shown no activity for months becomes a candidate for deactivation. Entra Agent ID logs activity for every agent identity, so the data for such decisions is already available \u2013 it just needs to be analyzed.<\/p>\n What Security Teams Should Plan Now<\/h2>\nEntra Agent ID is an improvement. It brings agents into an established system that has managed identities effectively for years. The mistake would be assuming this improvement works automatically. Four steps must be planned before the number of agents reaches double digits.<\/p>\n First, inventory.<\/strong> Maintain an up-to-date directory of all agent identities, including the associated agent, owner, and scope of permissions. Without this inventory, every further action is blind.<\/p>\nSecond, privilege classification.<\/strong> Treat agent identities with broad access like privileged accounts, with regular permission reviews and minimal privilege assignment.<\/p>\nThird, lifecycle management.<\/strong> Assign every agent identity an expiration date or review obligation. Deactivate inactive identities \u2013 don\u2019t leave them running for convenience.<\/p>\nFourth, detection.<\/strong> The SOC needs rules to detect anomalous behavior from agent identities, such as unusual privilege escalation or activity outside expected patterns. Entra Agent ID provides the necessary log data; analyzing it is a separate task.<\/p>\nThe sober assessment: machine identities aren\u2019t cause for panic, but they do demand discipline. Microsoft has built the right framework for AI agents to exist as manageable identities. Whether this results in a clean, well-maintained directory or a wild proliferation of non-human accounts will be decided by the security team \u2013 not the product.<\/p>\n Frequently Asked Questions<\/h2>\nEvery question is locked. A tap unlocks the answer.<\/p>\n\nWhat is Microsoft Entra Agent ID?<\/strong><\/summary>\nEntra Agent ID is an identity and security framework that extends Microsoft Entra capabilities to AI agents. Agents receive their own identities with adaptive access policies, risk detection, lifecycle management, and logging. It has been generally available since May 1, 2026, and is part of Agent 365.<\/p>\n<\/details>\n\nWhat are the four object types in the identity model?<\/strong><\/summary>\nThe model consists of the Agent Identity Blueprint as a template, the Blueprint Principal as a security anchor, the Agent Identity as the identity of the running agent, and the optional Agent User, a user-like identity. Using the Blueprint, one or more agent identities can be created.<\/p>\n<\/details>\n\nWhy are machine identities a security risk?<\/strong><\/summary>\nNot because they are inherently insecure, but because they grow quickly and unnoticed. Every productive agent generates at least one identity. Without inventory, privilege classification, and lifecycle management, a stock of non-human accounts emerges that no standard routine captures, and which becomes a blind spot in the event of an incident.<\/p>\n<\/details>\n\nWhat’s particularly sensitive about the Agent User?<\/strong><\/summary>\nThe Agent User is a user-like identity for an agent. Because it behaves like a user account, it can also accumulate rights like a user account. Without regular rights checks, a combination of rights emerges that no one has consciously assigned. A compromised Agent User then opens up this entire access.<\/p>\n<\/details>\n\nWhat should security teams do first?<\/strong><\/summary>\nSet up a current inventory of all agent identities, treat identities with extensive access like privileged accounts, assign an expiration date or review obligation to each agent identity, and supplement detection rules for anomalous agent behavior in the SOC. 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