&gt; The traffic from the Echo has been studied extensively.<p>cool, got a link to those?<p>mainly out of interest reading about such systems and DSP, btw.<p>actual trust could only come from open source--&quot;this closed source, auto-updating software hasn&#x27;t been observed to send sensitive data over the network <i>so far</i>&quot; is something I might as well take your word for :-)