Defaults.Exposed › September 2026 census › v10 registry › Clickjacking protection
Clickjacking protection
Methodology v10 · canonical ID x-frame-options · Web Security · scored · census as of September 5, 2026
Stops attackers embedding your site to trick your customers into clicking things.
Definition
| Canonical ID | x-frame-options |
|---|---|
| Category | Web Security |
| Grade impact | Scored, counts toward the grade |
| Pass | The site sends X-Frame-Options (DENY/SAMEORIGIN) or a CSP frame-ancestors directive. |
| Fail | Neither header is sent, the site can be framed by any origin. |
| Example (passing) | X-Frame-Options: DENY |
No-data rule: when this check couldn't be determined for a domain (timeout, SERVFAIL, redacted source) it returns N/A and is excluded from that domain's scoring denominator: "couldn't determine" is never counted as a failure. "Determined absent" is a real fail.
Prevalence across the census
15.3% of graded domains send clickjacking protection (X-Frame-Options or CSP frame-ancestors) (19,226,529 of 125,815,036, as of September 5, 2026).
Census denominator: 316,600,902 graded domains. Aggregates only: never an individual domain's result.
Fix it
Plain-English impact, cost of ignoring it, and step-by-step remediation: defaults.exposed/fix/clickjacking
Cite this check
Defaults.Exposed, "Clickjacking protection (x-frame-options)", Grading Methodology v10 (census as of September 5, 2026). https://defaults.exposed/v10/methodology/x-frame-options
Permalink: https://defaults.exposed/v10/methodology/x-frame-options ·
All 34 checks: v10 registry ·
Machine-readable: /v10/methodology/checks.json ·
Licence: open data