EchoGram: AI’s Achilles’ Heel Exposed – LLM Guardrails Outwitted!
New research reveals that the EchoGram vulnerability can outsmart today’s top Large Language Models, like GPT-5.1. By adding a random string, attackers can trick guardrails into allowing harmful requests or blocking harmless ones, causing chaos and “alert fatigue.” Time to update those defenses before AI goes rogue!

Hot Take:
In a twist worthy of a Hollywood blockbuster, AI security firm HiddenLayer has discovered a vulnerability in modern Large Language Models (LLMs) that could have your friendly neighborhood chatbot flipping verdicts faster than a pancake at a breakfast buffet. It’s called EchoGram, and it’s got even the most advanced AI scratching its digital head. Who knew a few strategically placed words could have the AI guardrails doing the cha-cha around security threats?
Key Points:
- HiddenLayer exposes a vulnerability in LLMs called EchoGram.
- EchoGram manipulates AI guardrails by using ‘flip tokens’.
- Flip tokens can approve malicious requests or flag safe ones as threats.
- This flaw can cause ‘alert fatigue’, weakening trust in AI security measures.
- Developers have a short window to counteract EchoGram’s potential exploits.
