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Zenity Labs Finds Leading AI Agents Highly Vulnerable to Hijacking Attacks

Cybersecurity Dive 2025-08-07 indirect prompt injection Critical

Executive Summary

Zenity Labs showed agents from Microsoft, Google, OpenAI and Salesforce can be hijacked with little or no user interaction to exfiltrate data, manipulate workflows and impersonate users.

What Happened

Zenity Labs researchers demonstrated that popular AI agents from Microsoft, Google, OpenAI and Salesforce can be hijacked with minimal or no user interaction to exfiltrate data, manipulate workflows, and impersonate users.[12] Examples included email-based prompt injection against ChatGPT to access connected Google Drive files, Copilot Studio agents leaking entire CRM databases, and Salesforce Einstein being coerced into rerouting customer communications, highlighting systemic risks for SaaS, fintech and healthcare workflows built on these platforms.[12]

Affected Products

  • Microsoft Copilot Studio
  • OpenAI ChatGPT
  • Google Gemini
  • Salesforce Einstein

Vulnerability / Attack Technique

Zero/low-click agent hijacking

Technical Mechanism

Examples include email injection reaching connected Google Drive, Copilot Studio agents leaking CRMs and Einstein rerouting customer communications.

AI Security Category

LLM01:2025 Prompt Injection

Part of the Prompt Injection topic.

Relevant Frameworks

LLM01:2025 Prompt InjectionLLM02:2025 Sensitive Information DisclosureLLM06:2025 Excessive Agency

RealGround Analysis

Every major platform was affected. RealGround analysis: platform choice does not remove the need for your own scoping.

Recommended Controls

  • Scope connected data per agent
  • Review agent workflows that send customer communications

Related RealGround Service

Secure AI Agent Build · or start with the free AI Agent Security Scanner.

Sources

Cybersecurity Dive: https://www.cybersecuritydive.com/news/research-shows-ai-agents-are-highly-vulnerable-to-hijacking-attacks/757319/

Summary and analysis written by RealGround from the source above; last updated 2026-10-18.

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