U.S. Cybersecurity Chief Resigns The government's cybersecurity chief has abruptly resigned after one year with the Department of Homeland Security, confiding to industry colleagues his frustration over what he considers a lack of attention paid to computer security issues. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-AP&lt;/B&gt;&lt;/FONT&gt;