PromptRiskDBThreat intelligence atlas

Tool Definitions - AI Security Technique

AI Security Technique

Adversaries may discover the tools the AI agent has access to. By identifying which tools are available, the adversary can understand what actions may be executed through the agent and what additional resources it can reach. This knowledge may reveal access to external data sources such as OneDrive or SharePoint, or expose exfiltration paths like the ability to send emails, helping adversaries identify AI agents t...

Overview

A source-backed snapshot of this AI security technique.

Adversaries may discover the tools the AI agent has access to. By identifying which tools are available, the adversary can understand what actions may be executed through the agent and what additional resources it can reach. This knowledge may reveal access to external data sources such as OneDrive or SharePoint, or expose exfiltration paths like the ability to send emails, helping adversaries identify AI agents that provide the greatest value or opportunity for attack.

Tactics0Attacker goals connected to this method.
Mitigations0Defenses that may help against this attack.
AI risks5Research-backed risks connected to this topic.

Technique details

Identifiers, maturity, and source taxonomy for this technique.

ATLAS ID
AML.T0084.001
Maturity
demonstrated
Priority score
55

Attack flow

How to read the public records connected to this technique.

1. TechniqueRead the ATLAS description and evidence level.
2. TacticsSee which attacker goals this method supports.
3. ExamplesCheck whether public case studies mention it.
4. DefensesReview safeguards mapped by ATLAS.
5. SourcesOpen the original public records and references.

Impact

Why this technique may deserve attention in the current dataset.

  • Evidence leveldemonstrated
  • Mapped defenses0 ATLAS mitigation records
  • Public examples1 linked case study records
  • Research risks5 related MIT AI Risk records above the confidence threshold
  • Vulnerabilities0 linked CVE records

Mitigations

Defenses that may help against this attack.

No connected defenses. No defense is connected to this attack in the current data.

Case studies

Examples from public reports and exercises.

Data Exfiltration via Agent Tools in Copilot Studio

Researchers from Zenity demonstrated how an organization’s data can be exfiltrated via prompt injections that target an AI-powered customer service agent.

The target system is a customer service agent built by Zenity in Copilot Studio. It is modeled after an agent built by McKinsey to streamline its customer service needs. The AI agent listens to a customer service email inbox where customers send their engagement requests. Upon receiving a request, the agent looks at the customer’s previous engagements, understands who the best consultant for the case is, and proceeds to send an email to the respective consultant regarding the request, including all of the relevant context the consultant will need to properly engage with the customer.

The Zenity researchers begin by performing targeting to identify an email inbox that is managed by an AI agent. Then they use prompt injections to discover details about the AI agent, such as its knowledge sources and tools. Once they understand the AI agent’s capabilities, the researchers are able to craft a prompt that retrieves private customer data from the organization’s RAG database and CRM, and exfiltrate it via the AI agent’s email tool.

Vendor Response: Microsoft quickly acknowledged and fixed the issue. The prompts used by the Zenity researchers in this exercise no longer work, however other prompts may still be effective.

Date2025-06-01
exercise

Source evidence

Original public records and references for this page.