Providing temporary use of on-line and non-downloadable software for ensuring the security of electronic mail; providing temporary use of non-downloadable computer software, namely, software for the creation and development of information and communications security features and components for use in, by or with software applications; application service provider (ASP) featuring software for use in network management of an enterprise fleet of wireless devices comprising multiple mobile device third party operating systems; electronic mail data loss prevention and protection services, namely, design and development of electronic data security systems; computer security consultancy in the field of scanning and penetration testing of computers and networks to assess information security vulnerability; computer security service, namely, restricting access to and by computer networks to and of undesired web sites, media and individuals and facilities; computer security services, namely, enforcing, restricting and controlling access privileges of users of computing resources for cloud, mobile or network resources based on assigned credentials; information and advice regarding the aforementioned services