42 Providing services for Internet transactions and mobile communications, namely, installation and onsite and remote monitoring of computer software so as to ensure that no information is illegally tampered with in either the form of information outflow or the creation of network disorder through hacking or cracking at individual sites on the Internet; providing security services for Internet transactions and mobile communications, namely, remote monitoring of computer security system; providing Internet security vulnerability analyses through a series of tests for computer systems; intrusion detection services to secure safety of clients' e-commerce; providing authentication services for Internet transactions using mobile phones and pagers, namely, providing passwords for one-time use during Internet banking, cyber trading, Internet shopping which protects clients' passwords from being stolen by crackers; computer diagnostic services