<p><pre><code> Alexander has been confirmed to address Black Hat
since mid-May, before the Guardian and the Washington
Post, relying on leaks from ex-NSA contractor Edward
Snowden, revealed widespread NSA surveillance on
Americans' phone records and the online habits of persons
the NSA believes to be non-Americans living outside the
US.
</code></pre>
Alexander will certainly not be keynoting with all the public scrutiny on him and the NSA now...