title: Possible security issues of setting Access-Control-Allow-Origin
body: <p>I see that setting "*" wildcard is security risk i.e.</p>
  
  <pre><code>Access-Control-Allow-Origin: "*"
  </code></pre>
  
  <p>What i would liked to know are there any security risk in setting of concrete domain i.e.</p>
  
  <pre><code>Access-Control-Allow-Origin: http://www.example.com
  </code></pre>