OPEL-BREISGAU-FREIBURG.DE

HSTS

HSTS Usage Statistics · Download List of All Websites using HSTS

Forces browsers to only communicate with the site using HTTPS.

Varnish

Varnish Usage Statistics · Download List of All Websites using Varnish

Varnish is a web accelerator / reverse proxy caching server.

Varnish Server

Apache

Apache Usage Statistics · Download List of All Websites using Apache

Apache has been the most popular web server on the Internet since April 1996.

nginx

nginx Usage Statistics · Download List of All Websites using nginx

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

HTML5 DocType

HTML5 DocType Usage Statistics

The DOCTYPE is a required preamble for HTML5 websites.

Cascading Style Sheets

Cascading Style Sheets Usage Statistics

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML

Content Type Options

Content Type Options Usage Statistics

Used to disable MIME-sniffing for a particular HTTP response.

X-Frame-Options

X-Frame-Options Usage Statistics

The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a frame or iframe. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

X-XSS-Protection

X-XSS-Protection Usage Statistics

X-XSS-Protection is a HTTP header set by Internet Explorer 8+. This header lets domains toggle on and off the "XSS Filter" of IE8, which prevents some categories of XSS attacks.

Strict Transport Security

Strict Transport Security Usage Statistics

The HTTP Strict-Transport-Security (HSTS) header instructs the browser to only use https.

Referrer Policy

Referrer Policy Usage Statistics

Requests made from a document, and for navigations away from that document are associated with a Referrer header. This policy determines in the browser should send a referrer or not.

Feature Policy

Feature Policy Usage Statistics

Provides a mechanism to allow and deny the use of browser features

Content Security Policy

Content Security Policy Usage Statistics

Content Security Policy is a computer security concept, to prevent cross-site scripting XSS attacks.

X-UA-Compatible

X-UA-Compatible Usage Statistics

Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.

CORS

CORS Usage Statistics

The Cross-Origin Resource Sharing (CORS) mechanism gives web servers cross-domain access controls, which enable secure cross-domain data transfers. Access Control Allow Origin.