Squarespace fix guide
Missing HSTS Header on Squarespace
HTTP Strict-Transport-Security is not set. Users can be downgraded to insecure HTTP connections via man-in-the-middle attacks.
Issue ID: SEC-HSTS-001Severity: majorEffort: S
Why this matters
HTTP Strict-Transport-Security is not set. Users can be downgraded to insecure HTTP connections via man-in-the-middle attacks. This affects browser trust signals and whether visitors feel safe submitting contact details.
Squarespace fix path
How to fix this on Squarespace
Check page settings, navigation, and code injection.
- 1Identify whether this is page-level or site-level.
- 2Apply the fix.
- 3Republish and confirm.
After you fix it
- ✓Check response headers for Strict-Transport-Security with curl -I or browser DevTools
Same fix, other platforms
Fix missing hsts header on a different CMS
Other fixes
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