JevMade

Sign in
← Back to guides

JevMade field notes / Written guide

Securing Agents That Choose Instead of Write

Pillar Security explains TypeSafe’s warning that malicious input can steer Jev, and argues for checks before actions run.

Original by Pillar SecurityGuardrails

Listen to this guide

JevMade’s plain-English explanation

0:00 /

Our summary

An agent using Jev can select an action without generating text. There may be no written reply or reasoning trace for defenders to inspect, Pillar Security argues. Its article considers where security checks should sit when the model's entire output is a decision.

Malicious instructions hidden in the information Jev reads can steer its answer, as TypeSafe's documentation warns. Pillar says the application must enforce its own limits before running other programs. The model's estimate of how likely an answer looks does not authorize an action.

An allowed answer can still be wrong. Pillar cites TypeSafe's examples of contradictory answers to opposite questions and recommends checking allowed actions, testing hostile input and involving people in consequential choices. The company's own security products follow that approach.

Key takeaways

  1. Try hostile documents and retrieved pages to see whether they alter the chosen action.
  2. Check permissions in the application before running an action the model selects.
  3. Neither a likely answer nor a correctly formatted one grants permission to act.

Pillar Security sells agent-security tooling. The article reviews TypeSafe’s documented limits and examples; a fixed answer format does not establish a secure guardrail.

pillar.security

Read the original guide Opens the author’s site in a new tab.

Keep this for later

Sign in to bookmark experiments, guides and videos, and keep notes only you can see.

Continue to sign in

We’ll bring you back to this listing.