Trust Digital Gets CEO, Cash Influx Trust Digital Inc., a McLean software company, is getting a new chief executive and \$3.1 million in new investments as it tries to expand its business making security software for wireless devices. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2"\ color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;