ECHO: Response Harmfulness Optimization-Based Jailbreak Attack

# ECHO: Response Harmfulness Optimization-Based Jailbreak Attack

https://gcdradar.vercel.app/incidents/echo-response-harmfulness-optimization-based-jailbreak-attac · AIR-2026-1400 · closed 2026-11-02

- Lane: Research
- Severity: 1 (Research / proof of concept)
- Fix status: Fix status unknown
- First reported: 2026-10-19
- AI role: Attack on AI
- Products: ECHO

## Summary

Researchers propose ECHO, an optimization-based jailbreak attack that replaces compliance proxies with direct response harmfulness evaluations. The method demonstrates improved capability in bypassing model safety alignments.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-10-19: ECHO: Replacing the Compliance Proxy with Response Harmfulness in Optimization-Based Jailbreak Attack (https://arxiv.org/abs/2610.23030)

## Sources

- 2026-10-19 arXiv: ECHO: Replacing the Compliance Proxy with Response Harmfulness in Optimization-Based Jailbreak Attack https://arxiv.org/abs/2610.23030

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.