analyzing-email-headers-for-phishing-investigation

analyzing-email-headers-for-phishing-investigation is a skill for Claude Code from balsm-health/Balsm-AI. It costs 44 tokens per session (3,057 once invoked), scanned A, original, no licence file.

A guide for examining email headers to investigate phishing, which is fraudulent communication designed to trick recipients, and check whether a sender is genuine.

In plain words
What is it for?
Use it to parse headers, trace where a phishing email came from, verify sender claims, and investigate spoofing.
Why use it?
It helps trace suspicious messages and detect forged senders by checking SPF, DKIM, and DMARC email-authentication results.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the balsm-ai plugin — 66 skills, 1 command, 1 agent, 2 hooks, 3 MCP servers shipped together

Good fit Use it to parse headers, trace where a phishing email came from, verify sender claims, and investigate spoofing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation
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.

Any agent
npx skills add balsm-health/Balsm-AI --skill analyzing-email-headers-for-phishing-investigation
Clone the repo
git clone --depth 1 https://github.com/balsm-health/Balsm-AI

Made for: Claude Code.

Or install balsm-ai, the plugin that ships this one along with the rest of its 66 skills, 1 command, 1 agent, 2 hooks, 3 MCP servers.

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 analyzing-email-headers-for-phishing-investigation

README.md
[![agentmods](https://agentmods.dev/badge/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation/github.svg)](https://agentmods.dev/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation)
Your own site
<a href="https://agentmods.dev/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation"><img src="https://agentmods.dev/badge/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for analyzing-email-headers-for-phishing-investigation

Your own site · 80×15
<a href="https://agentmods.dev/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation"><img src="https://agentmods.dev/badge/skills/balsm-health/balsm-ai/analyzing-email-headers-for-phishing-investigation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,057 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 5.1 $0.00044 $0.03057
Opus 5 $0.00022 $0.01528
Sonnet 5 $0.00009 $0.00611
Haiku 4.5 $0.00004 $0.00306

Measured 12d ago against content hash ce6c88724272, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

analyzing-email-headers-for-phishing-investigation scanned grade A with 1 finding 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 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "https://api.abuseipdb.com/api/v2/check?ipAddress=${SENDING_IP}" \
plugin/skills/analyzing-email-headers-for-phishing-investigation/SKILL.md · 332 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 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. 12d ago First seen · 332 lines · 44 tokens per session scan A ce6c88724272

Subscribe to this mod's changes

analyzing-email-headers-for-phishing-investigation is a skill published in the GitHub repository balsm-health/Balsm-AI (2 stars, last pushed 1mo ago), with no licence file. It adds 44 tokens to every session and 3,057 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

analyzing-email-headers-for-phishing-investigation

Parse and analyze email headers (Received chain, Return-Path, Message-ID) to trace the true origin of a phishing email and validate SPF, DKIM, and DMARC results to confirm or rule out sender spoofing. Use when triaging a suspicious or reported email, investigating a phishing incident, or verifying whether a message's…

mukul975/Anthropic-Cybersecurity-Skills · 84 tokens

analyzing-email-headers-for-phishing-investigation

Parse and analyze email headers to trace the origin of phishing emails, verify sender authenticity, and identify spoofing through SPF, DKIM, and DMARC validation.

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analyzing-email-headers-for-phishing-investigation

Use when parse and analyze email headers to trace the origin of phishing emails, verify sender authenticity, and identify spoofing through SPF, DKIM, and DMARC validation. Use when working with analyzing email headers for phishing investigation.

oyi77/1ai-skills · 57 tokens

analyzing-email-headers-for-phishing-investigation

Parse and analyze email headers to trace the origin of phishing emails, verify sender authenticity, and identify spoofing through SPF, DKIM, and DMARC validation.

plurigrid/asi · 44 tokens

analyzing-email-headers-for-phishing-investigation

An email-forensics guide for tracing where a suspicious message came from and checking whether its sender details are genuine. It uses SPF, DKIM, and DMARC, which are standards that help verify email senders.

killvxk/cybersecurity-skills-zh · 54 tokens

analyzing-email-headers-for-phishing-investigation

Parse and analyze email headers to trace the origin of phishing emails, verify sender authenticity, and identify spoofing through SPF, DKIM, and DMARC validation.

26zl/cybersec-toolkit · 44 tokens