preserve-security-evidence

preserve-security-evidence is a skill for Claude Code, Codex from gaelic-ghost/socket. It costs 49 tokens per session (474 once invoked), scanned A, original, Apache-2.0.

A guide for preserving security evidence before analysis, containment, or repair changes it. It records original artifacts, hashes, timestamps, commands, transformations, and reproducible handoff details.

In plain words
What is it for?
Use it with files, volatile host state, logs, screenshots, vulnerability checks, timelines, and other incident or security-test records.
Why use it?
It helps investigators distinguish original evidence from working copies and maintain a reliable record of what was observed and changed.

Skill for Claude CodeCodex

Part of the cybersecurity-skills plugin — 31 skills shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/gaelic-ghost/socket/preserve-security-evidence
Any agent
npx skills add gaelic-ghost/socket --skill preserve-security-evidence
Clone the repo
git clone --depth 1 https://github.com/gaelic-ghost/socket

Made for: Claude Code, Codex.

Or install cybersecurity-skills, the plugin that ships this one along with the rest of its 31 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for preserve-security-evidence

README.md
[![agentmods](https://agentmods.dev/badge/skills/gaelic-ghost/socket/preserve-security-evidence.svg)](https://agentmods.dev/skills/gaelic-ghost/socket/preserve-security-evidence)
Your own site
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/preserve-security-evidence"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/preserve-security-evidence.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 474 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00049 $0.00474
Opus 5 $0.00024 $0.00237
Sonnet 5 $0.00010 $0.00095
Haiku 4.5 $0.00005 $0.00047

Measured yesterday against content hash 58367e09bc21, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

preserve-security-evidence scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/cybersecurity-skills/skills/preserve-security-evidence/SKILL.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Preserve Security Evidence

Overview

Create a reproducible security record while keeping originals and observations distinct from transformed working material. Prioritize volatile evidence when delay would erase it, but state when urgent harm reduction must take precedence.

Read references/security-record.md for the shared record and transformation shapes.

Workflow

  1. Define the question and evidence owner.

    • Record the affected person/system, requested decision, acquisition source, time, and analyst.
    • Record authorization and disclosure limits when they matter.
  2. Separate original and working material.

    • Avoid opening active content during preservation.
    • Copy artifacts into a clearly named working area when analysis requires mutation.
    • Record every extraction, decoding, re-sign, patch, conversion, or replay as a transformation that creates a new artifact identity.
  3. Capture stable identity.

    • Record paths or logical identifiers, sizes, timestamps, cryptographic hashes, versions, bundle/package identifiers, UUIDs, signer identity, and source URLs when applicable.
    • Record tool name, version, command, configuration, and environment for consequential observations.
  4. Prioritize volatile state.

    • Capture time, logged-in users, processes and ancestry, open files, network state, relevant memory or runtime telemetry, and transient logs only when authorized and proportionate.
    • Do not collect unrelated personal or secret data merely because access is available.
  5. Maintain evidence quality.

    • Store observations, external intelligence, hypotheses, conclusions, and disproven hypotheses separately.
    • Preserve raw output alongside summaries when safe.
    • Mark missing data, collection failures, time skew, incomplete coverage, and evidence destroyed by containment.
  6. Produce a handoff.

    • State which inputs are originals, which are working copies, what changed, and which next workflow should consume them.

Read the full file on GitHub · 46 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 46 lines · 49 tokens per session scan A 58367e09bc21

Subscribe to this mod's changes

preserve-security-evidence is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 9d ago), licensed Apache-2.0. It adds 49 tokens to every session and 474 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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