my name is alex stamos, yahoo's chief information security officer. i joined in march. prior to that i served as the chief technology officer of artemis internet and was a cofounder of isec partners. i have spent my career building and improving secure, trustworthy systems and i am very proud to be working on security at yahoo. it is a global technology company that provides services including search, content and communications in 60 countries. as a pioneer of the web we enjoy some of the longest lasting consumer relationships on the web. it is because we never take these relationships for granted, that 800 million users each month trust yahoo to provide them with internet services across mobile and web. there are a few key areas i would like to emphasize. first, our users matter to us. building and maintaining user trust through secure products is a critical focus. by default, all of our products need to be secure for our users around the globe. second, achieving security online is not an end statement it is a constantly evolving challenge we tackle head on. third, mal