Cipher Security

Q: What is a Claude Code skill and how does the Cipher Security 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. Cipher Security 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: web-security · Last updated: 2026-08-09

Is our data safe, check for vulnerabilities, security posture, before we ship. Security scanning, vulnerability assessment, and compliance auditing for iOS apps — secrets management, OWASP Mobile Top 10, KYC/AML/PCI DSS, encryption audits. Trigger on: 'are we secure', 'audit security', 'scan for secrets', 'hardcoded API keys', 'check authentication', 'compliance review', 'data protection', or pre-launch security review. For security review of a specific PR or diff, use trailofbits-differential-review instead. For production crash investigation, use sentry-find-bugs.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Cipher Security includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); pricing or quota commentary; 9 code blocks for direct copy-paste. At roughly 3,889 words the SKILL.md is on the longer end of the catalog distribution.

License: MIT
Original author: AbleVarghese
Indexed lastmod: 2026-08-09
Catalog position: Security · web-security
Indexed related skills: 10

How Cipher Security fits the catalog

Cipher Security sits in the Security category under the web-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 Cipher Security safe to install?

A free static scan flagged 1 of ten categories (credentials), 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 Cipher Security writes its SKILL.md to ~/.claude/skills/cipher-security/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 — cipher-security should appear by name.

What Cipher Security needs to run

External services: The SKILL.md references pricing, quota, or rate limits — it likely calls a paid or rate-limited API. Check the source before wiring it into unattended automation.
Scope discipline: Declares explicit “when not to use” boundaries — safer than average to hand to an autonomous agent, which is less likely to over-apply it.
Worked code: 9 copy-paste code blocks in the body.
Depth: ~3,889 words, substantial — top of the catalog distribution.

When to reach for it

There are 10 related skills in Security — a two-minute scan of the alternatives usually confirms whether Cipher Security is the right pick.

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.

From the source SKILL.md

Assess application security posture, enforce compliance standards, and prevent credential exposure across iOS codebases and infrastructure.

What this skill does

Cipher Security is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cipher-security/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Cipher Security 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/cipher-security
curl -L https://claudskills.com/skills/cipher-security/SKILL.md \
  -o ~/.claude/skills/cipher-security/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/cipher-security/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/cipher-security/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cipher-security\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 Cipher Security Claude Code skill?

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

What does the Cipher Security 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 Cipher Security skill?

Use Cipher Security when your Claude Code task falls under the Security category — specifically in the web 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 Cipher Security" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Cipher Security 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. Cipher Security 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/AbleVarghese/ios-claude-toolkit/blob/HEAD/skills/cipher-security/SKILL.md
License: MIT
Author: AbleVarghese

Cite this skill

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

APA

AbleVarghese. (2026). Cipher Security [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/cipher-security/

BibTeX

@misc{cipher-security-2026,
  author    = {AbleVarghese},
  title     = {Cipher Security [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/cipher-security/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/cipher-security.svg)](https://claudskills.com/skills/cipher-security/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-09 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (credentials), 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/cipher-security/#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

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore