devtools

Nettacker: Accelerate Security Testing with 5.7k+ GitHub Stars

Name: Nettacker: Accelerate Security Testing with 5.7k+ GitHub Stars
Author: OWASP

Run automated penetration tests and vulnerability scans across your infrastructure fast. Ideal for founders who need reliable security insight without building a scanner from scratch.

From the repo · “Automated Penetration Testing Framework - Open-Source Vulnerability Scanner - Vulnerability Management”

intermediate⏱ 30 minutes💵 Free (self-hosted)

5,685 stars+21★ this week1,221 forksPythonGuide quality 9/10 · reviewed Oct 16Updated 10/22/2026100% free · open source

What it is

Run automated penetration tests against your network using Nettacker.

Real use case example

"A founder wants to ensure their new SaaS product is safe. First they install Nettacker on their laptop, then they point it at the product’s public URL and start a scan. After a few minutes Nettacker returns a list of found CVEs, which the founder shares with the dev team to patch before launch."

Best insideAny AI Client

When to use it

•When you need to identify potential security vulnerabilities in your web application before launch
•When you want to perform regular security audits to ensure your network and applications are secure
•When you need to demonstrate the security of your application to investors or partners

Ready-to-paste prompt

python nettacker.py -i 192.168.1.1-192.168.1.100 --users usernames.txt --passwords passwords.txt

Heads up: Make sure you have Python 3.6 or higher installed, as Nettacker is not compatible with earlier versions of Python

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/nettacker && curl -fsSL https://workflowstacks.com/api/skills/nettacker/claude-skill -o ~/.claude/skills/nettacker/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How Nettacker: Accelerate Security Testing with 5.7k+ GitHub Stars works

Codeflow

Free to inspect

Nettacker: Accelerate Security Testing with 5.7k+ GitHub Stars is a large Python project (~23k lines across 69 code files, plus 32 test files). Setup is light: runs with Docker. Last commit this month, Apache-2.0 license, has a test suite.

Size

Large codebase

~23k lines · 69 code files · ~3 h to skim

Setup

Light setup

Runs with Docker.

Runs on

Python · Docker

No API keys detected

Python 73%CSS 17%JavaScript 10%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
AGENTS.md
The instructions the AI actually follows
3
nettacker/main.py
Where the program starts running
4
pyproject.toml
Dependencies and the commands it exposes
5
nettacker/__init__.py
Inside nettacker/ — the main logic begins here

What's in each folder

nettacker/Core code — the actual logic793 files

docs/Documentation14 files

tests/Tests — proof it works32 files

.github/CI / automation (GitHub Actions)8 files

READMEHas testsDocumentedCI checksDocker readyApache-2.0 licenseUpdated this month

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/nettacker && curl -fsSL https://workflowstacks.com/api/skills/nettacker/claude-skill -o ~/.claude/skills/nettacker/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

OWASP

Language

Python

Do this with a working workflow

Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.

Outcome guide

Score your leads by ideal-customer fit

You describe your ideal customer once and keep leads in a Google Sheet. The workflow scores each 1–5 for fit with a one-line reason, so you sort and work the best first.

MCP config