include::../description.adoc[]

include::../ask-yourself.adoc[]

include::../recommended.adoc[]

== Sensitive Code Example

In Express.js application the code is sensitive if the https://www.npmjs.com/package/helmet[helmet] or https://www.npmjs.com/package/hsts[hsts] middleware are disabled or used without recommended values:

----
const express = require('express');
const helmet = require('helmet');

let app = express();

app.use(helmet.hsts({
  maxAge: 3153600, // Sensitive, recommended >= 15552000
  includeSubDomains: false // Sensitive, recommended 'true'
}));
----

== Compliant Solution

In Express.js application a standard way to implement HSTS is with the https://www.npmjs.com/package/helmet[helmet] or https://www.npmjs.com/package/hsts[hsts] middleware:

[source,javascript]
----
const express = require('express');
const helmet = require('helmet');

let app = express(); 

app.use(helmet.hsts({
  maxAge: 31536000,
  includeSubDomains: true
})); // Compliant
----

include::../see.adoc[]

ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

include::../message.adoc[]

endif::env-github,rspecator-view[]
