ClaudSkills / Security / network-security

Detecting Ssl Cert Issues

Q: What is a Claude Code skill and how does the Detecting Ssl Cert Issues skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Detecting Ssl Cert Issues is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: network-security · Last updated: 2026-06-01

type:audit

Audit a target's TLS certificate beyond protocol/expiry — chain ordering, OCSP stapling, revocation status, Certificate Transparency presence, key-usage flags, and over-broad wildcards. Use when: TLS handshake already passes (skill #1 analyzing-tls-config cleared) but you suspect the cert posture is fragile. Auditors flag this during SOC2 readiness when a renewal slipped or an intermediate was rotated. Threshold: missing OCSP stapling on production, fewer than 2 SCTs in the cert, intermediate served out of order, key usage missing digitalSignature/keyEncipherment, revoked cert presented, or wildcard scope of 2-level (e.g., *.com is rejection; *.api.example.com is fine). Trigger with: "check cert revocation", "audit ocsp", "ct log check", "cert chain audit".

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Detecting Ssl Cert Issues includes a dedicated installation section; worked examples; 5 code blocks for direct copy-paste. The SKILL.md runs to about 788 words, in the catalog's typical mid-range.

Source: tonsofskills.com
License: MIT
Original author: Jeremy Longshore <[email protected]>
Indexed lastmod: 2026-06-01
Catalog position: Security · network-security
Indexed related skills: 10

How Detecting Ssl Cert Issues fits the catalog

Detecting Ssl Cert Issues sits in the Security category under the network-security sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

Is Detecting Ssl Cert Issues safe to install?

A free static scan flagged 1 of ten categories (network), including lower-severity patterns. Read the security scan below before installing — a pattern inside a code fence is weighted as an example, not an instruction.

Installing & verifying

Installing Detecting Ssl Cert Issues writes its SKILL.md to ~/.claude/skills/detecting-ssl-cert-issues/SKILL.md; Claude Code discovers it automatically on the next session — no restart flag needed. It declares no allowed-tools restriction, so it inherits your session’s existing tool access rather than narrowing it. To confirm it loaded, ask Claude to list its available skills — detecting-ssl-cert-issues should appear by name.

What Detecting Ssl Cert Issues needs to run

Prerequisites: Ships its own installation / prerequisites section — it isn’t purely self-contained; read that first.
Worked code: 5 copy-paste code blocks in the body.
Depth: ~788 words, typical mid-range depth.

When to reach for it

Weighing Detecting Ssl Cert Issues against a close alternative? See the side-by-side comparison.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Detecting Ssl Cert Issues is a community-contributed Claude Code skill in the network-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/detecting-ssl-cert-issues/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: TLS handshake already passes (skill #1 analyzing-tls-config cleared) but you suspect the cert posture is fragile. Auditors flag this during SOC2 readiness when a renewal slipped or an intermediate was rotated.

Who uses this skill

The Detecting Ssl Cert Issues Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 178,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/detecting-ssl-cert-issues
curl -L https://claudskills.com/skills/detecting-ssl-cert-issues/SKILL.md \
  -o ~/.claude/skills/detecting-ssl-cert-issues/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/detecting-ssl-cert-issues/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/detecting-ssl-cert-issues/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\detecting-ssl-cert-issues\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Detecting Ssl Cert Issues Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/detecting-ssl-cert-issues/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Detecting Ssl Cert Issues skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Detecting Ssl Cert Issues skill?

Use Detecting Ssl Cert Issues when your Claude Code task falls under the Security category — specifically in the network security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Detecting Ssl Cert Issues" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Detecting Ssl Cert Issues skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Detecting Ssl Cert Issues is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/HEAD/plugins/security/penetration-tester/skills/detecting-ssl-cert-issues/SKILL.md
License: MIT
Author: Jeremy Longshore <[email protected]>
Website: https://tonsofskills.com

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Jeremy Longshore <[email protected]>. (2026). Detecting Ssl Cert Issues [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/detecting-ssl-cert-issues/

BibTeX

@misc{detecting-ssl-cert-issues-2026,
  author    = {Jeremy Longshore <[email protected]>},
  title     = {Detecting Ssl Cert Issues [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/detecting-ssl-cert-issues/}
}

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Badge

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Security scan

Grade A · scanned 2026-08-08 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
⚠ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/detecting-ssl-cert-issues/#security)

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills

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