title: No querystring logged in IIS log on "A potentially dangerous Request.QueryString value detected"
body: <p>I'm intermittently seeing this exception being thrown: </p>
  
  <blockquote>
    <p>A potentially dangerous Request.QueryString value detected</p>
  </blockquote>
  
  <p>However when I look in the IIS logs I can see that the request that failed has no querystring logged against it.</p>
  
  <p>How could this be?  Are "dangerous" query strings being stripped from the log or something?</p>