Preventing Information Leakage (server version banner).
The server returned a version banner string in the response content. Such information leaks may allow attackers to further target specific issues impacting the product and version in use.
Configure the server to prevent such information leaks. For example: Under Tomcat, this is done via the 'server' directive and implementation of custom error pages. Under Apache, this is done via the 'ServerSignature' and 'ServerTokens' directives.
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The page includes one or more script files from a third-party domain.
The cache-control header has not been set properly or is missing, allowing the browser and proxies to cache content.