PROTECTING WEBSITES AND WEBSITE USERS BY OBSCURING URLS

Websites and website users are subject to an increasing array of online threats and attacks. Disclosed herein are, among other things, approaches for protecting websites and website users from online threats. For example, a content server, such as a proxying content delivery network (CDN) server that is delivering content on behalf of an origin server, can modify URLs as they pass through the content server to obscured values that are given to the end-user client browser. The end-user browser can use the obscured URL to obtain content from the content server, but the URL may be valid only for a limited time, and may be invalid for obtaining content from the origin. Hence, information is hidden from the client, making attacks against the website more difficult and frustrating client-end malware that leverages knowledge of browsed URLs.