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techstack-security

Security-posture and third-party SaaS identification — security headers, CSP, HSTS, email auth, security.txt, plus payments/analytics/auth/CRM/support integrations.

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transilienceai/communitytools595 stars(GitHub 595 + cccskills 0)

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Files included (2)

  • SKILL.md1.8 KB
  • reference/patterns.md5.0 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Security Posture & Third-Party Tech-Stack

Scope

Two related lenses on a target:

  1. Security posture — HTTP security headers, Content Security Policy, HSTS, email auth (SPF/DKIM/DMARC/MTA-STS), security.txt, certificate practices.
  2. Third-party / SaaS detection — payment processors, analytics, customer support, identity providers, CRM/marketing, error monitoring, A/B testing, social/communication SDKs, media CDNs.

The two are coupled: CSP script-src and DNS TXT verifications reveal third-party services, while third-party domains contribute to the overall security surface.

Signals (input)

  • HTTP response headers — security headers, CSP directives, HSTS
  • DNS TXT records — SPF, DKIM, DMARC, SaaS verification tokens
  • HTML — meta-tag security policies, embedded widgets/iframes
  • Loaded JS / script-src URLs and globals
  • /.well-known/security.txt, /security.txt, /.well-known/change-password

Inferences (output)

  • Security score (header coverage, CSP strength, email-auth strength, security.txt presence)
  • CSP analysis (unsafe-inline/eval issues, allowed third-party domains)
  • Email-auth grade (DMARC policy strength)
  • Third-party SaaS catalogue by category, with integration mode (client SDK vs CSP-only vs DNS-only)

Techniques

See reference/patterns.md.

When to use

  • Pre-engagement security baseline
  • Mapping supply-chain / SaaS exposure
  • Identifying integrations that grant pivot opportunities (Auth0, Stripe webhook surface, Sentry DSN leakage, etc.)
  • Phase 3 of tech-stack OSINT

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