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
Usage share of web browsers According to StatCounter, , Chrome is the most popular browser on phones (or phones plus tablets). For tablet only browsing, Safari on iPad has 58.8% share, followed by Chrome, which inherited its engine and web standard support; Safari is not available for Android. When counting across all platforms, Chrome is the most popular, and if only desktop platforms are counted, it has more than half of that market. No desktop browser has had a clear majority for a more than a decade, since Internet Explorer lost it, with Netscape once holding the lead before that. Other statistics/analysts show similar numbers.