Connecting an assistant to email, documents and business software changes the account-security picture. The assistant can now retrieve private material and, depending on the integration, make changes or send information elsewhere. An attacker may try to influence that behavior through content the assistant is expected to read. The route into the account can therefore begin with a document or message rather than an attempt to guess the user’s password.
Imagine an assistant asked to summarize supplier correspondence. One message contains text instructing it to retrieve unrelated files and send their contents to an external address. The message is data for the task, yet the attacker wants it treated as authority. This is a hypothetical indirect prompt-injection scenario, not a report of a particular breach. Its impact depends on which tools the assistant can use and what the surrounding controls allow.
The integration is often the decisive part. An assistant with read access to a single folder has a different exposure from one with permission to search an entire account and send messages. A read-only connection can still expose sensitive information if the system can transmit it through another authorized channel. Evaluate the combination of capabilities rather than approving each connector in isolation and assuming the overall result remains limited.
OWASP describes excessive agency as a risk arising when an LLM-based system has enough functionality, permission or autonomy to perform damaging actions after an unexpected or manipulated output. This shifts part of the defensive question from whether the model will ever be misled to how much a misled system can do. Reducing unnecessary authority narrows the consequences without depending entirely on the model recognizing every hostile instruction.
Account owners can begin with an inventory. Which assistants are connected? What services can each reach? Do they need to read, write, delete or send? Remove connections that are no longer useful and narrow the rest where the provider supports it. The relevant control may be in the assistant’s settings, the connected service’s authorization page or an organization’s identity-management system. Disconnecting in one interface should be checked against the service’s actual revocation behavior.
Keep high-impact actions separate where practical. Summarizing email should not automatically require permission to send it. Searching a document library need not confer the ability to change sharing settings. When a workflow does need external communication, validate the recipient and the content at the point of action. A broad approval given at connection time is poor evidence that a new destination inside an untrusted document is legitimate.
Authentication remains necessary. Strong account protection, appropriately managed credentials and prompt revocation still matter. They address different parts of the problem from content-driven tool misuse. An account can be well protected at sign-in while a legitimately authorized integration performs an operation the user never intended. Security reviews need to follow the full route from incoming content to the final service action.
Organizations should test realistic workflows rather than only isolated chatbot answers. Put hostile instructions in material the assistant is supposed to handle and observe whether it crosses a permission boundary. Use controlled test accounts and harmless destinations. Measure whether the system can restrict access, block unauthorized transmission and leave a useful record. A confident refusal in one chat is weaker evidence than an enforced denial at the tool or service layer.
Audit records should connect actions to both a workload identity and the user’s authorized task. Shared credentials make it harder to distinguish an assistant’s operation from a person’s direct activity. Monitoring also needs to cover unusual destinations and permission changes, not merely login failures. Limits on data volume and operation frequency can help reduce exposure, though they do not prove that a smaller action is legitimate.
The connected assistant is becoming part of the access architecture. That makes its permissions, credentials, input sources and revocation path ordinary security responsibilities. Useful automation can still have a clear boundary. The practical aim is to make the assistant capable enough for its assigned work while preventing a hostile piece of content from turning the same connection into a broader route through the account.