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
Google Chrome 10.7, and 10.8 ended in April 2016 with the release of Chrome 50. Support for OS X 10.9 ended in April 2018 with the release of Chrome 66. Google Chrome was met with acclaim upon release. In 2008, Matthew Moore of "The Daily Telegraph" summarized the verdict of early reviewers: "Google Chrome is attractive, fast and has some impressive new features..." Initially, Microsoft reportedly played down the threat from Chrome and predicted that most people would embrace Internet Explorer 8. Opera Software said that "Chrome will strengthen the Web as the biggest application platform in the world". But by February