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Proxy Settings '.pac' File Request Detection

Info

Synopsis

This host has requested proxy settings from a remote web server.

Description

Proxy auto-config files, or PAC files provide the ability to auto configure proxy settings for your browser, including the ability to configure proxy settings on a per URL basis. Recent traffic from this host indicates it has requested a '.pac' file from a remote web server. In the past, malicious software has been known to use these files to perform Man-in-the-Middle attacks against affected systems.

Solution

Ensure this configuration is intended. If not, correct or disable the proxy settings on the remote host.