httpOnlyCookies

<httpCookies domain="String" 
             httpOnlyCookies="true|false" 
             requireSSL="true|false" />

The following default httpCookies element is not explicitly configured in the machine configuration file or in the root Web.config file, but is the default configuration returned by an application in the .NET Framework version 2.0.

 Internet Explorer added support in Internet Explorer 6 SP1 for a cookie property called HttpOnlyCookies that can help mitigate cross-site scripting threats that result in stolen cookies. When a cookie that has HttpOnlyCookies set to true is received by a compliant browser, it is inaccessible to client-side script. For more information on possible attacks and how this cookie property can help mitigate them, please see Mitigating Cross-Site Scripting with HTTP-Only Cookies tutorial on MSDN.
<httpCookies httpOnlyCookies="false" 
  requireSSL="false" 
  domain="" />