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email-security

Use for authorized email security review including phishing analysis, header authentication (SPF/DKIM/DMARC), BEC patterns, and mailbox token abuse research.

Published by zhaoxuya520 ↗zhaoxuya520/reverse-skill

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email-security

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Use email-security to analyze authorized supplied suspicious-email headers, content, and authentication results for [raw email source or headers], [authorization scope], and [available authentication results], returning Received-chain and From/Return-Path alignment findings, SPF/DKIM/DMARC assessment, impersonation and reply-address differences, and evidence-linked IOC notes. Do not redeliver the sample or interact with its links or attachments; clearly identify any tenant or sandbox analysis that would need separate access or evidence.

Required inputs

[raw email source or headers]
[authorization scope]
[available authentication results]

User-approved starter prompt based on a pinned source version; check current skill requirements before running. Task evidence ↗

SKILL.md

name: email-securitydescription: Use for authorized email security review including phishing analysis, header authentication (SPF/DKIM/DMARC), BEC patterns, and mailbox token abuse research.

Email Security & Phishing Analysis

ACTION REQUIRED（读完后立刻执行）

NOW: 确认授权（分析样本邮件 / 租户配置评审）
NOW: 不向真实用户二次投递恶意样本
ACT: 头认证 → 内容/URL → 附件沙箱 → 租户控制面建议

适用场景

钓鱼邮件拆解与 IOC
SPF/DKIM/DMARC 配置评估
BEC 商务邮件欺诈模式
OAuth 应用钓鱼 / 邮箱令牌滥用（联合 llm/cloud 身份）
安全意识演练设计（授权）

工作流

□ 完整原始头：Received 链、From/Return-Path 一致性
□ SPF/DKIM/DMARC 对齐结果
□ URL 沙箱与附件静态（联合 malware-analysis）
□ 仿冒品牌与回复地址差异
□ 租户：反钓鱼策略、外部标记、MFA、OAuth app 同意

工具链

工具	用途
邮件客户端「查看源」	头
dig/nslookup	SPF/DMARC 记录
urlscan / 沙箱	链接与附件
租户管理中心	策略

参考

references/email-auth-checklist.md
../malware-analysis/ ../attack-chain/（钓鱼阶段） ../windows-ad/（令牌）

路由上下文

上游: MASTER R36
MUST NOT: 未授权对第三方域群发测试钓鱼

任务完成自检

头认证结论是否完整？
IOC 是否可检测化（联合 threat-hunting）？
Checklist？