&gt; While it does not stop even the most basic active attackers<p>You just admitted that it&#x27;s useless!<p><a href="https:&#x2F;&#x2F;adamcaudill.com&#x2F;2014&#x2F;02&#x2F;25&#x2F;on-opportunistic-encryption&#x2F;" rel="nofollow">https:&#x2F;&#x2F;adamcaudill.com&#x2F;2014&#x2F;02&#x2F;25&#x2F;on-opportunistic-encrypti...</a>