SEO for Solos
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Chapter 14Paid

Trust, security and accessibility

Security headers including a real CSP and the compromise it requires, the API validation pipeline, timing-safe secret comparison, and the accessibility work that is also SEO work.

6 min read · updated 2026-07-26· last reviewed 2026-07-26

Six headers, each preventing a specific attack, all set once in one module. There is no judgement involved in five of them. The sixth, CSP, requires a real decision.

A strict script-src on a statically prerendered React app requires one of three things:

The rest of "Trust, security and accessibility"

1,244 words covering 6 sections, with the implementation code for 12 checks. The table of contents below is the full outline, so you can see exactly what is behind this.

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What this chapter covers

  • The headers, and what each one prevents
    • The principle
    • The implementation
  • CSP, and the compromise nobody writes down
    • The principle
    • The implementation
  • The API validation pipeline
    • The principle
    • The implementation
  • Timing-safe comparison
    • The principle
    • The implementation
  • Accessibility is also indexing
    • The principle
    • The implementation
  • Consent that actually gates
    • The principle
    • The implementation

Checks this chapter covers

Each one has a command you can run against your own site.