Abstract: An authenticated secure network communication link is established between an alert message generating computer 2 and a destination data processing system 6. The alert message sent specifies a risk threat level and a suggested countermeasure amongst other data. The destination computer 6 automatically responds to the alert message as controlled by its local response configuration parameters to trigger security actions of one or more security mechanisms, such as malware scanners, firewall scanners, security policy managers and the like.

Abstract: An authenticated secure network communication link is established between an alert message generating computer 2 and a destination data processing system 6. The alert message sent specifies a risk threat level and a suggested countermeasure amongst other data. The destination computer 6 automatically responds to the alert message as controlled by its local response configuration parameters to trigger security actions of one or more security mechanisms, such as malware scanners, firewall scanners, security policy managers and the like.

Abstract: An authenticated secure network communication link is established between an alert message generating computer 2 and a destination data processing system 6. The alert message sent specifies a risk threat level and a suggested countermeasure amongst other data. The destination computer 6 automatically responds to the alert message as controlled by its local response configuration parameters to trigger security actions of one or more security mechanisms, such as malware scanners, firewall scanners, security policy managers and the like.

Abstract: A technique for identifying reply mailer computer program viruses detects whether a reply message is generated in less than a threshold reply time and whether or not the reply message includes an attachment. The generation of a reply message in less than a threshold reply time and including an attachment is deemed indicative of an infected reply message and accordingly that message will be quarantined, deleted, disinfected or the like. The mail server using the present technique maintains a temporary log of email messages sent indicating the sender, the recipient, and the time of sending. This log is used to identify replies and determine whether or not those replies have been received in less than the reply threshold time.

Abstract: A token based system for authenticating a client computer when it connects to a network. An address is requested from a server connected to the network. Provision of the address by the server triggers the server to look for a token on the client computer. If no token is found steps, such as revoking the address, can be taken. This enables a system administrator to control what machines can connect to the network, for example, it may allow only those having specified anti-virus software.

Abstract: A token based system for authenticating a client computer when it connects to a network. An address is requested from a server connected to the network. Provision of the address by the server triggers the server to look for a token on the client computer. If no token is found steps, such as revoking the address, can be taken. This enables a system administrator to control what machines can connect to the network, for example, it may allow only those having specified anti-virus software.