Research explained

Simulated file disclosure is not proof that a chatbot read a server file

Resecurity’s prompt-injection write-up highlights the need to distinguish generated output from demonstrated backend access.

Published 29 Oct 2026 · Material update 25 Jan 2026 — last time the underlying evidence changed · Evidence: medium

What happened

Resecurity’s January 2026 write-up discusses prompt manipulation and a simulated /etc/passwd disclosure. A model producing plausible file-like text is not, by itself, evidence that it opened a real file on the host system.

A convincing security finding needs a demonstrated connection between model behavior and application impact: an actual tool call, verifiable private data or a controlled side effect. The article should not be recast as confirmed remote code execution or a named customer breach.

When testing chatbots, record the application’s tool activity and validate results independently. Report simulated output as simulation, and separate policy bypasses from unauthorized access to underlying systems.

Read the original source.

Next step

Require verifiable tool activity or private-data evidence before claiming file access.

What remains unknown

Open question
The sources reviewed do not establish whether your deployment was exploited.

Source references