Tomer Wetzler

Security researcher & engineer - started my security journey doing research on open source software security, and developing the tools to scan and defend against them. Then, pivoted to cloud apps and identity research in a full research scope, where I researched and created rules to mitigate complex attacks and the use of various attack tools. Now I'm focusing on AI security, where I work to defend AI agents everywhere!

Catching Prompt Guard Off Guard: Exploiting Overfit in Training Algorithms

Mar 12, 2026

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5 min read

Catching Prompt Guard Off Guard: Exploiting Overfit in Training Algorithms

How understanding the training algorithms used in machine learning models may allow attacker to bypass them entirely

Tomer Wetzler

Moving The Decision Boundary of LLM Safety Classifiers

Jan 4, 2026

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4 min read

Moving The Decision Boundary of LLM Safety Classifiers

How a new fine-tuning approach can mitigate the problem of inaccurate safety paths

Tomer Wetzler

The Geometry of Safety Failures in Large Language Models

Dec 28, 2025

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8 min read

The Geometry of Safety Failures in Large Language Models

A deep dive into activation space of prompts in safety classifiers. Showing not why - but where - safety fails in LLM classifiers meant to detect malicious prompts.

Tomer Wetzler