With the speed and a nationwide advertising campaign credited for rise in popularity, Google Chrome has overtaken Firefox to become the UK's second most popular web browser. According to Statcounter web metrics, Chrome has captured 22% of UK users last month. Microsoft's Internet Explorer still remains the most popular browser for UK users with 45%. Apple's Safari is UK number four, with a 9% share. Chrome sources said speed as an essential part of its progress, with minimal design and the way it handles security. Microsoft's IE has fallen heavily, to 43%, with warnings about security vulnerabilities whereas Google with a 20.65% market is making good progress with its announcement of Chromebook laptop based on its browser.