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: A method for network security includes monitoring traffic exchanged over a computer network. A failed attempt to communicate with a target computer by an initiating computer is identified in the monitored traffic. The identified failed attempt is revived by establishing an investigation connection with the initiating computer while impersonating the target computer. Verification is made as to whether the failed attempt was malicious or innocent, by communicating with the initiating computer over the investigation connection.

Abstract: A method for network security includes monitoring traffic exchanged over a computer network. A failed attempt to communicate with a target computer by an initiating computer is identified in the monitored traffic. The identified failed attempt is revived by establishing an investigation connection with the initiating computer while impersonating the target computer. Verification is made as to whether the failed attempt was malicious or innocent, by communicating with the initiating computer over the investigation connection.