&gt;  have a private&#x2F;secret meeting in your basement<p>&gt; have secret files on your computer<p>Do any of the participants have any mobile phones on them? Are there any windows in the basement? What do you mean by &quot;secret files&quot;? Do you mean encrypted? How do you know it&#x27;s not a compromised service&#x2F;protocol?<p>I think you underestimate what present-day technology is capable of.