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Strict Transport Security - Detector 0.79.1-signed.1-signed
It scrutinizes the HTTP Response Headers for the presence of Strict-Transport-Security Header. Information gathering tool to fingerprint the web server capability to show resistant to MITM (Man In The Middle) (sslstrip exploitation).
About this Add-on
When the expiration time specified by the Strict-Transport-Security header elapses, the next attempt to load the site via HTTP will proceed as normal instead of automatically using HTTPS.
Whenever the Strict-Transport-Security header is delivered to the browser, it will update the expiration time for that site, so sites can refresh this information and prevent the timeout from expiring.
Refer - https://developer.mozilla.org/en/Security/HTTP_Strict_Transport_Security