JavaScript to the operating system's API with superuser privileges. These flaws have affected major browsers including Firefox, Internet Explorer, and Safari. Plugins, such as video players, Adobe Flash, and the wide range of ActiveX controls enabled by default in Microsoft Internet Explorer, may also have flaws exploitable via JavaScript (such flaws have been exploited in the past). In Windows Vista, Microsoft has attempted to contain the risks of bugs such as buffer overflows by running the Internet Explorer process with limited privileges. Google Chrome similarly confines its page renderers to their own "sandbox". Web browsers are capable of running JavaScript outside
Internet Explorer Mobile other Microsoft devices besides the smartphone in use: if a user is logged in with his Microsoft account on both his Windows 8.1 device and Windows Phone device, tabs on Internet Explorer 11 will synchronize automatically. Microsoft made several changes to Internet Explorer Mobile to make the browser more compatible with sites designed for mobile Safari (iOS) and Chrome (Android). To accomplish this, Microsoft adopted features used in Safari and Chrome, emulates legacy WebKit features, and claims to web servers that it is iOS or Android compatible. The new version of Internet Explorer Mobile was released with Windows Phone 8.1