Autonomy creep: how AI quietly gains more authority than CIOs intend

Few CIOs are likely to suddenly decide to give an AI agent broad authority over corporate systems. The more likely path to autonomy is far less dramatic. An agent starts with a narrow task. It proves useful, so another system is connected. It then needs more data, so another permission is added. Then human approval becomes a bottleneck, so the organization removes it, and exceptions that once went to people start being handled automatically.

Each decision may be sensible in isolation. Taken together, however, they can leave an agent with considerably more authority than anyone originally envisioned.

That’s the danger of autonomy creep. And as enterprises move from AI systems that recommend actions to agents that execute them, CIOs need to govern not only what those agents were originally designed to do, but what they have gradually become capable of doing.

It starts with small permissions

Jim Taylor, president and chief product and strategy officer at identity security company RSA, sees a familiar pattern. Organizations typically create an agent for a specific purpose and give it the permissions necessary to accomplish the task. Later, the job expands.

“They just give it tasks, permissions; it just sits there and accumulates things,” he says. “Over time, it develops potentially toxic combinations. It gets too much access and can see too much data. It can do too many things.”

Humans accumulate permissions, too, of course, but organizations have developed processes around employees joining, changing roles, and eventually leaving. Agents may not have the same natural lifecycle. “They never give permissions back,” Taylor says.

Nancy Wang, CTO of 1Password, argues that CIOs should treat each expansion in an agent’s responsibilities as something more consequential than another feature. “Every time you expand the scope of the agent’s effective authority, you’re essentially adding a new authorization boundary,” she says.

That distinction between capability and authority is important. An agent may be technically capable of accessing a system, changing data, or executing a transaction, but that doesn’t mean the enterprise should automatically authorize it to do so.

Success can weaken oversight

Ironically, autonomy creep often occurs when AI works well. Paul Dongha, head of responsible AI and AI strategy at NatWest Group, sees that potential at the bank.

NatWest deployed agents in complaint handling, he says. Parts of the workflow that involve retrieving information from systems can be automated relatively easily, while humans continue to make the final decision on whether to uphold or reject a complaint.

If a system consistently produces the correct result, human reviewers may begin treating approval as a formality. The organization may eventually decide that the check is no longer necessary. “The temptation is to give over to the AI because it’s so reliable,” Dongha says.

NatWest sometimes reduces checking when an AI system demonstrates sufficiently high performance, he adds, but the decision is deliberate rather than incremental. It involves stakeholders and risk managers, and the system continues to be monitored afterward.

That’s a critical distinction for CIOs. Removing an approval step doesn’t necessarily represent poor governance. Removing it because everybody has gradually stopped paying attention to it does.

The warning sign is when a human moves from making a meaningful decision to merely rubber-stamping one — and then entirely disappears from the workflow without anyone reassessing the authority the agent has gained.

Put the controls outside the model

As agents acquire more authority, CIOs can’t rely solely on the agent to respect instructions about what it should and shouldn’t do. At 1Password, Wang advocates what she calls verified loops. Before an agent begins work, humans define its task, which tools it may use, what evidence will demonstrate that it completed the task successfully, and which actions it should never perform.

A separate verifier then compares evidence from the agent’s actions against that human-defined policy. “What you want to avoid here is something recursive where you have a fox guarding a henhouse, or the agent looking over its own work,” Wang says.

The principle applies beyond software development. A model might be instructed never to transfer more than a certain amount of money, delete a production environment, or access particular data. But if violating that rule would have serious consequences, the limit should also exist outside the model.

RSA’s Taylor makes the same distinction from the identity and access side. “Model-level guardrails are necessary, but not sufficient,” he says. “The real limits need to sit outside of that in enterprise control.” He argues for layered controls around agents, including identity policies, provisioning rules, lifecycle policies, governance, monitoring, and attestations.

In other words, CIOs shouldn’t ask an AI agent to exercise restraint where the infrastructure could simply prevent the unauthorized action.

Govern access in real time

Traditional access governance often operates on a schedule. A manager might review an employee’s permissions quarterly and determine whether those permissions are still appropriate. Agents may evolve too quickly for that approach. “Agentic identities are dynamic,” Taylor says. “So we need a mechanism that certifies them continuously, rather than performing periodic reviews.”

If an agent suddenly gains access to another database, for example, that event itself could trigger reassessment. Organizations should determine whether the new permission is appropriate or creates a dangerous combination with access the agent already possesses. “Privilege and authority should never be permanent,” Taylor adds. “They should always be reviewed.”

Wang favors an even more granular approach of task-based authorization. Rather than giving agents standing access or long-lived credentials, organizations can make authorization decisions at runtime and provide short-lived credentials only when required for a particular task. “We espouse no standing privileges,” she says. “No long-lived credentials.”

That effectively applies least privilege at agent speed. A change in task becomes an opportunity to reassess whether the agent still needs the access it’s requesting.

Make someone own the agent

Technical controls, however, don’t eliminate the organizational question of accountability. Taylor believes enterprises should be able to associate agents with a responsible identity. If an employee creates an agent, the organization needs to know who’s responsible for it, what its purpose is, and what happens to it if that person changes roles or leaves. “Every agent action needs to be attributed to a responsible identity,” he says.

Ownership also needs a lifecycle. An agent that remains important after its creator leaves should be transferred to another designated owner rather than simply continuing indefinitely.

Dongha makes another distinction. For AI embedded in a business process, he believes the business owner should remain accountable because that person owns the customer relationship, the process, and often the P&L. “It’s the business owner who has the responsibility because their people run it, and they’re responsible for the customer relationship,” he says.

That creates a useful division of roles for CIOs: IT may provide the infrastructure and controls, but the business can’t outsource accountability for the consequences of autonomous decisions.

Multi-agent systems need system-level controls

The challenge becomes more complicated when agents begin working together. An individual agent might remain entirely within its permitted scope while contributing to an overall outcome nobody intended. One agent generates an output. Another accepts it as input and takes an action. A third agent then acts on the result. Again, the individual actions may all appear legitimate.

Dongha says enterprises therefore need to test not only individual agents but the entire network as a system. “You need something overarching on top of a multi-agent system,” he says.

NatWest is working on an AI control tower that would give authorized users visibility into a network of agents, including messages passed among them and the guardrails surrounding those interactions. Dongha considers governance of multi-agent systems an emerging problem that nobody has fully solved yet.

Wang also points to a related challenge that identity becomes more complicated when agents are ephemeral. An organization may spin up a temporary team of agents, tear it down, and recreate it later. If something goes wrong, the enterprise needs to reconstruct which agent made which decision during which session, and how that action propagated through the system.

That makes traceability increasingly important as autonomous systems become less like individual applications and more like networks of interdependent actors.

Set the bar before the agent reaches it

Before an agent goes into production, Taylor says CIOs should be able to answer several basic questions: Who owns it, what can it do, what’s its maximum authority, how will the organization know if that scope changes, and which actions require a human decision.

Other industries don’t need to replicate the governance machinery of a large bank, but they can borrow one important principle: controls should be built into the system from the beginning. “Governance shouldn’t be a check at the end,” Dongha says. “It needs to be embedded when you build an AI system.”

For CIOs, that may be the central lesson of autonomy creep. The question isn’t simply whether an agent can be trusted today but whether the organization has mechanisms to notice when tomorrow’s agent has quietly acquired authority that nobody ever intended to give it.