SkillCheatSheet
detecting-spearphishing-with-email-gateway
An AI agent skill from mukul975/Anthropic-Cybersecurity-Skills, scored 73 out of 100 by code.
Code score by group
It loses the most points in Procedure (8), the group that checks whether the steps are numbered, read the context first and say what to do when something fails.
What the author says it does
Detect and block spearphishing emails that use personalized, researched content to evade generic spam filters, by configuring email security gateway (SEG) impersonation protection, URL rewriting, attachment sandboxing, and custom detection rules in Microsoft Defender for Office 365, Proofpoint, Mimecast, or Barracuda. Use when hardening a mail gateway against targeted phishing or investigating a suspected spearphishing campaign.
This is the description in the skill's own SKILL.md, written by its author, not by SkillCheatSheet.
- Repository
- mukul975/Anthropic-Cybersecurity-Skills
- Folder
- skills/detecting-spearphishing-with-email-gateway
- License
- Apache-2.0
- GitHub stars
- 35,958
- SKILL.md lines
- 153
- Other files
- 7
Add detecting-spearphishing-with-email-gateway to your agent
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill detecting-spearphishing-with-email-gatewayThe command uses the open skills CLI. A skill is instructions and scripts your agent will follow, so read it first: open the folder on GitHub at the commit that was scored.
Labelled for
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All skills in mukul975/Anthropic-Cybersecurity-Skills
Scores come from a snapshot of 300 public GitHub repositories taken on 12 November 2026. Every score is the result of fixed checks run by code; no AI is involved. How scoring works.