<p>The Bush administration on Monday selected Amit Yoran, a respected software executive from Symantec Corp., as the nation's new cybersecurity chief inside the Department of Homeland Security.</p>
<p>Yoran, who is hardly a household name but well known within the cybersecurity community, will be the government's evangelist for convincing Americans to improve their computer defenses against hackers, disgruntled employees, commercial rivals and foreign governments.</p>