Internet Explorer proved to be the biggest security concern for Microsoft in the last month, with the browser spurring 11 of the 19 critical vulnerabilities the company issued in August's "Patch Tuesday" set of software fixes. Such a sizable group of critical patches once again underscores the need for users and organizations to update their copies of Internet Explorer. Their reluctance to upgrade has been a source of ongoing frustration for security professionals, who repeatedly warn of the dangers of unpatched browsers and remind everyone how easy it is to actually update.