Notion just released version 3.0, complete with AI agents. Because the system contains Simon Willson’s lethal trifecta, it’s vulnerable to data theft though prompt injection.

First, the trifecta:

The lethal trifecta of capabilities is:

• Access to your private data—one of the most common purposes of tools in the first place!
  


• Exposure to untrusted content—any mechanism by which text (or images) controlled by a malicious attacker could become available to your LLM
  


• The ability to externally communicate in a way that could be used to steal your data (I often call this “exfiltration” but I’m not confident that term is widely understood.)...

The post Abusing Notion’s AI Agent for Data Theft appeared first on Security Boulevard.

Bruce Schneier

Source: Security Boulevard
Source Link: https://securityboulevard.com/2025/09/abusing-notions-ai-agent-for-data-theft/