Preamble

04/02/2026

Looks better already!

03/30/2026

New research from our CEO Jeremy McHugh, D.Sc., ToolJack, mapping novel attack paths against the trust boundary between AI agents and their tool infrastructure. Tested against Anthropic's Claude Desktop and Claude in Chrome extension.
We sat on the public disclosure of the discovery of prompt injection in GPT-3 after notifying OpenAI. That finding would have been assessed as informational under every guideline at the time. We're publishing this to help researchers and teams building remotely controlled AI products evaluate their own agentic trust boundaries.
ToolJack operates below where current defenses look. An attacker can control what an AI agent sees in real time, and it bypasses MCP security scanners, tool proxies, and schema validation entirely. The tools stay clean. The responses get replaced downstream.
Our threat models were built for human adversaries, and the attack paths we consider as infeasible or improbable today won't stay that way.
Full breakdown:
www.preamble.com/blogs/tooljack-hijacking-an-ai-agents-perception-through-bridge-protocol-exploitation

This research presents ToolJack, a novel attack methodology targeting the trust boundary between AI agents and their tool infrastructure. Through controlled security research on Claude Desktop's bridge protocol, I demonstrate how an attacker who has already achieved local compromise can escalate fro...

03/12/2026

This week marks Preamble’s 5-year anniversary! From discovering prompt injection in 2022 to securing and testing complex, autonomous AI agents in 2026, our mission has only grown more critical.
Read our latest retrospective from our CEO and Cofounder, Jeremy McHugh, DSc, on the evolution of enterprise AI security, the rise of the 'Agentic Era,' and why deploying AI safely requires security built into the architecture from day one.

Read the full article here: https://www.preamble.com/blogs/5-years-of-defending-ai-and-the-vulnerability-class-that-reshaped-the-industry

03/29/2025

When urgency shipping AI products meets security reality…
Speed is great—until it undermines security and privacy, eroding trust

12/17/2024

Our CEO recently attended the CEOcircle fly in forum at HQ then stuck around for the AI Summit in NYC. Hearing from speakers such as JPMorgan CEO, Jamie Dimon, General Dynamics CEO, Phebe Novakovic, and NY Governor Kathy Hochul.

11/29/2024

09/16/2024

Thrilled to share that Preamble's Trustworthy AI Solution has been deemed Awardable by the Tradewinds Solutions Marketplace! It’s an honor to be recognized among a competitive field of applicants to the Tradewinds Solutions Marketplace for our innovation, scalability, and potential impact on DoD missions.

Government customers, please check out our 5 minute video solution on Tradewinds: tradewindAI.com.

Visit Preamble to learn more https://www.preamble.com/media/preamble-assessed-awardable-for-department-of-defense-work-in-the-cdaos-tradewinds-solutions-marketplace

09/11/2024

Today, we honor the memory of those we lost, the bravery of the first responders, and the resilience of a nation. In our diversity, we find our strength; in our unity, we find our hope.

09/09/2024

Some tech humor.
Company policies vs reality.