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Defensics is a comprehensive, versatile, automated black box fuzzer that enables organizations to efficiently and effectively discover and remediate security weaknesses in software.

A comprehensive fuzzing framework

  • The generational fuzzer takes an intelligent, targeted approach to negative testing.
  • Advanced file and protocol template fuzzers enable users to build their own test cases.
  • The SDK allows expert users to use the Defensics framework to develop their own test cases.

Fuzz testing is experiencing a resurgence

30 years

The number of years fuzzing has been a proven security and quality testing technique

25.5 billion

The number of connected devices expected to be used by 2025

Learn more about the Defensics fuzzing solution


A versatile fuzzer that fits any team’s needs


Defensics is a black box fuzzer, meaning it doesn’t require source code to run. With Defensics, users can secure their cyber supply chain to ensure the interoperability, robustness, quality, and security of software and devices before introducing them into IT or lab environments.


Defensics fits nearly any development workflow—whether in a traditional SDL or CI environment. Its API and data export capabilities also enable it to integrate with surrounding technologies, making it a true plug-and-play fuzzer.

Quality assurance

Fuzz testing aims to address the infinite space problem: There are endless ways to misuse software. Defensics’ intelligent, targeted approach to fuzzing allows organizations to ensure software security without compromising product innovation, increasing time to market, or inflating operational costs.


Black box fuzzing is one of the top techniques used by adversaries. Use Defensics to uncover zero-day and unknown vulnerabilities before they lead to costly patches and recalls.

Properly executed fuzzing techniques can provide a low-cost, efficient means of finding vulnerabilities, covering more code paths and value iterations than a manual analysis can perform in a short period of time."

Bow Sineath


Director of technology at Alpha Defense Co.

Buy protocols tailored to your market needs

Choose from five new vertical solution bundles from Defensics

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