When the EndPointSecurity agent is installed, the user is able to copy malicious files from a USB storage device to the computer and the antivirus does not block the file. If you uninstall the EndPointSecurity agent, the antivirus blocks the malicious file from being copied.
EndPointSecurity 2012 build 20120104
This is a product defect which has been resolved in agent build 20121114.
Download and install the EndPointSecurity agent build 20121114 to resolve this issue.