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Security And Hardening

Checked
addyosmani·vlatest·security·MIT

Automates server hardening, vulnerability scanning, and configuration checks to improve system resilience.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add addyosmani/agent-skills --skill security-and-hardening -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

addyosmani

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned addyosmani/agent-skills at 2686b620fc.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
2686b620fc
Manifest
skills/security-and-hardening/SKILL.md
Scanned
2 files, 512 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill provides guidance and recommendations for securing systems and applications. It can help identify potential vulnerabilities, suggest remediation steps, and implement security best practices. The skill focuses on practical hardening techniques to improve overall system resilience against various threats.

When to use it

  • Auditing a new server: Before deploying an application, use this skill to review the server's configuration for common security misconfigurations.
  • Responding to a security alert: If you receive an alert about a potential vulnerability, leverage this skill to understand the issue and implement appropriate fixes.
  • Improving existing system security posture: Regularly utilize this skill to proactively identify and address weaknesses in your current infrastructure.
  • Developing secure coding practices: Integrate this skill into your development workflow to ensure that new applications are built with security considerations from the outset.

Key capabilities

  • Vulnerability identification
  • Remediation recommendations
  • Security best practice implementation
  • System hardening techniques

Example prompts

  • "What are some common vulnerabilities in a Linux server?"
  • "How can I harden my Nginx web server configuration?"
  • "Suggest steps to secure an AWS EC2 instance."
  • "What's the best way to implement least privilege access on this system?"

Tips & gotchas

The effectiveness of this skill depends on providing it with detailed information about the target environment. Be prepared to share relevant configurations and logs for more accurate and tailored recommendations.