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By monitoring is meant the identification, among the events occurring, of a forbidden event and the subsequent blocking of both the forbidden event itself and the object giving rise to the forbidden event A list of forbidden events or forbidden objects is transmitted from the antivirus module 180。 Furthermore, the antivirus agent 170 is able to perform an antivirus check by itself。 In this case, the antivirus agent 170 has a functional which enables said antivirus check (which is described herein with reference to FIG。 2)。

A second component of the antivirus system resides on the security virtual machine 140 (hereinafter, the SVM 140), which is specially created for the working of the antivirus system and which includes the antivirus module 180, which in turn is designed to perform the tasks of the antivirus check。 The SVM 140 is similar to VM 150, but its purpose, as mentioned above, is to perform the tasks of antivirus checking。 The creation of such a SVM 140 makes it possible to unload of VMs 150 from performing some of the resource-consuming operations (e。

g。, antivirus check methods) when performing the antivirus checking tasks from the VM 150, which allows for a reduced workload both on the VMs 150 themselves and on the host machine 110。 For example, the transfer to the SVM 140 of such an antivirus check method as signature ysis of files substantially reduces the workload on the resources of the host machine 110, in particular, it decreases the number of disk operations (work with the hard disk) and the use of memory。 This is due to the fact that a constant accessing of the signature list is needed during the performance of a signature ysis, but since this method is performed only by the SVM 140, the accessing of the hard disk also occurs from the SVM 140。 Yet another aspect is due to the fact that signature ysis takes time, which may result in substantial delay in the user's work。

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