All Users are prohibited from violating or attempting to violate the security of the Sites including, without limitation, accessing data not intended for them or logging into a server or account which they are not authorized to access, attempting to probe, scan or test the vulnerability of a system or network or attempting to breach security or authentication measures without proper authorization, attempting to interfere with service to any user, host or network or sending unsolicited e-mail. Violation of system or network security may result in civil and/or criminal liabilities.