Abstract: An apparatus for computer-network security includes a network interface and a processor. The network interface is configured for communicating over a communication network. The processor is configured to detect a request from a first computer to access a non-existent shared resource of a second computer, to send to the first computer, responsively to the request, a response that imitates a genuine grant of access to the non-existent shared resource, so as to initiate an interaction between the first computer and the shared resource, and to process the interaction so as to identify a malicious activity attempted by the first computer.

Abstract: An apparatus for securing a cloud-provider system includes one or more network interfaces and one or more processors. The network interfaces are configured for connecting to a network. The processors are configured to allocate resources of the cloud-provider system for use by tenants of the cloud-provider system, to allocate to the tenants one or more Internet Protocol (IP) address ranges, to assign multiple IP addresses, scattered across the IP address ranges, for use by one or more honeypot servers, and to secure the cloud-provider system against hostile attacks, by processing network traffic associated with the assigned IP addresses using at least the honeypot servers.

Abstract: An apparatus for computer-network security includes a network interface and a processor. The network interface is configured for communicating over a communication network. The processor is configured to detect a request from a first computer to access a non-existent shared resource of a second computer, to send to the first computer, responsively to the request, a response that imitates a genuine grant of access to the non-existent shared resource, so as to initiate an interaction between the first computer and the shared resource, and to process the interaction so as to identify a malicious activity attempted by the first computer.

Abstract: An apparatus for securing a cloud-provider system includes one or more network interfaces and one or more processors. The network interfaces are configured for connecting to a network. The processors are configured to allocate resources of the cloud-provider system for use by tenants of the cloud-provider system, to allocate to the tenants one or more Internet Protocol (IP) address ranges, to assign multiple IP addresses, scattered across the IP address ranges, for use by one or more honeypot servers, and to secure the cloud-provider system against hostile attacks, by processing network traffic associated with the assigned IP addresses using at least the honeypot servers.