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In 2009, Reis et al. proposed the first version of the process-per-site model to isolate web pages based on the page's web origin. [9] This was improved upon in 2009 by the Gazelle research browser, which separated specific document frames based on their web principal, a security barrier that corresponded with the specific document that was being loaded.
In computing, the same-origin policy (SOP) is a concept in the web-app application security model. Under the policy, a web browser permits scripts contained in a first web page to access data in a second web page, but only if both web pages have the same origin. An origin is defined as a combination of URI scheme, host name, and port number.
Cross-origin resource sharing (CORS) is a mechanism to safely bypass the same-origin policy, that is, it allows a web page to access restricted resources from a server on a domain different than the domain that served the web page. A web page may freely embed cross-origin images, stylesheets, scripts, iframes, and videos.
A similar approach is taken by the Cross-Origin Resource Blocking (CORB) mechanism and the Cross-Origin-Resource-Policy (CORP) header, which allows a cross-origin request to succeed but blocks the loading of the content in third-party websites if there is a mismatch between the content type that was expected and that which was received. [88]
Timing-Allow-Origin The Timing-Allow-Origin response header specifies origins that are allowed to see values of attributes retrieved via features of the Resource Timing API, which would otherwise be reported as zero due to cross-origin restrictions. [67] Timing-Allow-Origin: * Timing-Allow-Origin: <origin>[, <origin>]* X-Content-Duration [68]
One example goal of a policy is a stricter execution mode for JavaScript in order to prevent certain cross-site scripting attacks. In practice this means that a number of features are disabled by default: Inline JavaScript code [a] <script> blocks, [b] DOM event handlers as HTML attributes (e.g. onclick) The javascript: links; Inline CSS statements
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To mitigate security risks, browsers have been steadily reducing the amount of information sent in Referer. As of March 2021, by default Chrome, [3] Chromium-based Edge, Firefox, [4] Safari [5] default to sending only the origin in cross-origin requests, stripping out everything but the domain name.