A security feature that’s included with the Microsoft Edge browser appears to have stopped working, a security researcher says. The security feature is a Microsoft-developed security mechanism that can prevent basic cross-site scripting (XSS) attacks inside browsers. Microsoft developed and launched XSS Filter in 2008 when it was first included with Internet Explorer 8, but the feature has since expanded to Edge, and adopted by other browsers such as Google Chrome and Safari. Microsoft has not been on hand to respond to a request for comment.
Source: https://www.bleepingcomputer.com/news/security/microsoft-edges-xss-filter-appears-to-be-broken/

