Downloadable computer software and computer software, namely utility software for use in connection with global computer networks, software to remove unwanted and/or unauthorized computer files, programs and other byproducts remaining on a computer's storage devices as a result of using a web browser, computer software to block the reception of unwanted network messages or advertisements transmitted over a global computer network, intrusion and detection software, namely computer firewall software for protecting computer networks through security monitoring, access control and information flow control, electronic mail content filtering software, computer security software, namely computer software for computer and computer networks user identity protection, and computer software to block the reception and to facilitate the removal of unwanted and/or unauthorized computer files, programs and other byproducts remaining on a computer's storage devices as a result of using a web browser