Redefining Fuzzing for the Modern Security Stack

Penzzer was built to empower security teams with smarter, scalable fuzzing - bridging the gap between vulnerability research and real-world software development.

121+

Built-in protocol stacks

7

Different fuzzing engines

4

Fuzzing harnesses

Built for Breakers and Builders Alike

Whether you're uncovering zero-days or hardening production code, Penzzer brings advanced fuzzing within reach of every security workflow.

Our Story and Mission

We‑Fuzz was born out of frustration with brittle legacy security tools, inconsistent vulnerability coverage, and the reactive posture plaguing most DevSecOps pipelines.

Founded by security engineers and software veterans, we saw firsthand how most fuzzing solutions failed to scale, adapt, or deliver actionable insights in modern CI/CD environments.We set out to change that.

Our team developed Penzzer, a cloud-native fuzzing engine designed for high-throughput, protocol-aware, and self-service fuzzing at scale.

Backed by years of offensive security research, real-world exploitation data, and contributions to open standards, Penzzer automates the painful parts of fuzzing allowing security teams to focus on triage, remediation, and resilience.Our mission is simple but uncompromising:

To make continuous, deep security testing accessible and actionable for every engineering team without requiring a PhD in fuzzing.

Security Built for the Real World

We believe:

  • Security should be proactive, not reactive.
  • Tools should empower engineers, not block them.
  • Coverage and observability matter more than marketing buzzwords.
  • Zero-days aren’t magic they’re detectable if you test deeper, earlier, and smarter.

Reliability Through Resilience

Our vision is to raise the baseline for secure software development.

Not by selling silver bullets, but by giving teams the tools and telemetry to catch critical failures before attackers do.

From industrial control systems to blockchain infrastructure, from APIs to kernel modules.

We-Fuzz exists to expose the edge cases, race conditions, and parsing logic failures that traditional scanners miss.

Our amazing team

Noam Rathaus

Co Founder

Kay Shin

Co Founder

Roger Neal

VP Engineering

Aviram Jenik

VP Business Development (BD)

Uncover Hidden Vulnerabilities

Identify security flaws before attackers do, automatically and at scale with Penzzer's intelligent fuzzing engine.

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