title: What is w3wp.exe?
body: <p>I have a <code>WCF</code> service running under a service user on my local system. Every time I try to debug it is giving me a message <code>Attach Security warning</code>.</p>
  
  <p>In Visual Studio, by default (even without attaching), I get this error:</p>
  
  <blockquote>
    <p>Attaching to this process can potentially harm your computer. If the
    information below looks suspicious or you are unsure, do not attach to
    this process</p>
    
    <p>Name: C:\Windows\System32\inetsrv\w3wp.exe</p>
  </blockquote>
  
  <p>What is <code>w3wp.exe</code>? According to a Google search, I think it is related to IIS.  But what does it do? What setting should be changed so that this won't give this message everytime I try to debug on my local system?</p>