---
id: 1550
title: "Introducing DIFFER, a new tool for testing and validating transformed programs"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2024/01/31/introducing-differ-a-new-tool-for-testing-and-validating-transformed-programs/"
published_at: "2024-01-31T14:30:48Z"
tags: ["open-source", "fuzzing", "binary-analysis", "tooling", "trail-of-bits", "differential-testing", "debloating", "program-transformation"]
phying_url: "https://phying.com/item/1550"
lang: en
---

# Introducing DIFFER, a new tool for testing and validating transformed programs

## Summary

Trail of Bits introduced DIFFER, a new tool that combines differential, regression, and fuzz testing to find bugs in programs altered by rewriting, debloating, or hardening tools.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2024-01-31T14:30:48Z
- **Original:** https://blog.trailofbits.com/2024/01/31/introducing-differ-a-new-tool-for-testing-and-validating-transformed-programs/
- **Phying News:** https://phying.com/item/1550