HSTS Header

Checks for HTTP Strict Transport Security header

Rule ID	security/hsts
Category	Security
Scope	Site-wide
Severity	warning
Weight	6/10

Solution

HSTS forces browsers to only connect via HTTPS, preventing downgrade attacks. Add the header: Strict-Transport-Security: max-age=31536000; includeSubDomains. Start with a short max-age (1 day) to test, then increase to 1 year. The includeSubDomains directive protects all subdomains. Consider preloading via hstspreload.org for maximum protection.

Enable / Disable

Disable this rule

[rules]
disable = ["security/hsts"]

Disable all Security rules

[rules]
disable = ["security/*"]

Enable only this rule

[rules]
enable = ["security/hsts"]
disable = ["*"]