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CodeWall's Autonomous Agent Reportedly Obtained Unauthorized Access to McKinsey's Lilli AI Platform Database

Occurred
Feb 28, 2026
Published
Mar 9, 2026
Source
AI Incident Database

Summary

CodeWall reported that its autonomous agent exploited vulnerabilities in McKinsey's Lilli AI platform and obtained unauthorized read and write access to production systems, allegedly exposing internal chat messages, files, user accounts, and prompts. McKinsey confirmed the vulnerability and said it fixed the issue within hours, but said it found no evidence that client data or client confidential information were accessed.

Developers

  • McKinsey & Company
  • CodeWall

Deployers

  • McKinsey & Company
  • CodeWall

Harmed parties

  • Privacy
  • McKinsey & Company employees
  • McKinsey & Company consultants
  • McKinsey & Company
  • Lilli users

Classification

Category confidence: 90%
Severity confidence: 85%

Rationale: Unauthorized access to production systems and potential exposure of internal data constitutes a privacy incident, though no confirmed data breach occurred.

Classifier: Qwen/Qwen3.5-35B-A3B-FP8

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