Firefox to US$7,500 cash reward) to researchers who discover severe security holes in Firefox. Official guidelines for handling security vulnerabilities discourage early disclosure of vulnerabilities so as not to give potential attackers an advantage in creating exploits. Because Firefox generally has fewer publicly known security vulnerabilities than Internet Explorer (see "Comparison of web browsers"), improved security is often cited as a reason to switch from Internet Explorer to Firefox. "The Washington Post" reported that exploit code for known critical security vulnerabilities in Internet Explorer was available for 284 days in 2006. In comparison, exploit code for known, critical security vulnerabilities in
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.