Security assessment system

1. A security assessment system configured to provide a duplicated environment which duplicates an assessment target system comprising a plurality of physical components, the security assessment system comprising:

a duplicated environment design circuitry configured to decide a duplication level for each physical component based on constraints specified by a user in order to design the duplicated environment to produce a designed result indicative of a duplicated environment design, the duplication level indicating one of a simulation sub-module, an emulation sub-module, and a physical sub-module which are for reproducing the physical components of the assessment target system, the duplicated environment design circuitry deciding, in accordance with the constraints, which physical component should be assessed by the simulation sub-module, the emulation sub-module, or the physical sub-module, the constraints being requirements of budget, each physical component being associated with a monetary cost, the duplicated environment design circuitry deciding the physical components as the physical sub-module, the emulation sub-module, and the simulation sub-module in ascending order of the monetary cost from cheapest, within the budget; and

a duplicated environment construction circuitry configured to construct the duplicated environment based on the designed result, the duplicated environment comprises components which are duplicated by one of the duplication level.

2. The security assessment system as claimed in claim 1 ,

wherein the simulation sub-module comprises at least one of a specification of the physical component and a behavior model of a function of the physical component,

wherein the emulation sub-module comprises software which reproduces the physical component using a virtual machine, and

wherein the physical sub-module comprises at least one physical machine which is physically similar to the physical component in the assessment target system.

3. The security assessment system as claimed in claim 2 , wherein the security assessment system further comprises:

a document/model database storing documents indicative of specifications and a plurality of behavior models;

a virtual machine pool storing a plurality of virtual machines; and

a physical machine pool storing a plurality of physical machines,

wherein the duplicated environment construction circuitry is configured to:

store at least one document and/or at least one behavior model at the simulation sub-module from the document/model database;

configure and store at least one virtual machine at the emulation sub-module from the virtual machine pool; and

configure at least one network between the virtual machines and the physical machine in the physical machine pool.

4. The security assessment system as claimed in claim 2 , wherein the security assessment system further comprises:

an active scan/pen-test circuitry configured to actively scan and/or pen-test on the virtual machine and/or the physical machine in the duplicated environment to produce a result of an active scan/pen-test,

a vulnerability assessment circuitry configured to extract vulnerabilities of each component in the emulation sub-module and the physical sub-module based on the result of an active scan/pen-test to generate a list indicative of the extracted vulnerabilities; and

an attack graph generation circuitry configured to generate an attack graph based on the result of an active scan/pen-test,

wherein the duplicated environment design circuitry configured to select the duplication level based on at least one of the list and the attack graph.

5. The security assessment system as claimed in claim 2 , wherein the security assessment system further comprises:

an input interface configure to input the constraints, the specification, the behavior model, any signal on channels between the virtual machines, between the virtual machine and the physical machine, and between the physical machines; and

an output interface configured to output a response of the behavior model in response to the input, contents of the specification, and communication information between the virtual machines, between the virtual machine and the physical machine, and between the physical machines.

6. A method, performed by an information processing unit, of providing a duplicated environment which duplicates an assessment target system comprising a plurality of physical components, the method comprising:

deciding a duplication level for each physical component based on constraints specified by a user in order to design the duplicated environment to produce a designed result indicative of a duplicated environment design, the duplication level indicating one of a simulation sub-module, an emulation sub-module, and a physical sub-module which are for reproducing the physical components of the assessment target system, deciding, in accordance with the constraints, which physical component should be assessed by the simulation sub-module, the emulation sub-module, or the physical sub-module, the constraints being requirements of budget, each physical component being associated with a monetary cost, whereby deciding the physical components as the physical sub-module, the emulation sub-module, and the simulation sub-module in ascending order of the monetary cost from cheapest, within the budget; and

constructing the duplicated environment based on the designed result, the duplicated environment comprises components which are duplicated by one of the duplication level.

7. The method as claimed in claim 6 ,

wherein the simulation sub-module comprises at least one of a specification of the physical component and a behavior model of a function of the physical component,

wherein the emulation sub-module comprises software which reproduces the physical component using a virtual machine, and

wherein the physical sub-module comprises at least one physical machine which is physically similar to the physical component in the assessment target system.

8. The method as claimed in claim 7 , wherein the method further comprises:

actively scanning and/or pen-testing on the virtual machine and/or the physical machine in the duplicated environment to produce a result of an active scan/pen-test,

extracting vulnerabilities of each component in the emulation sub-module and the physical sub-module based on the result of an active scan/pen-test to generate a list indicative of the extracted vulnerabilities; and

generating an attack graph based on the result of an active scan/pen-test,

wherein the selecting selects the duplication level based on the list and the attack graph.

9. A non-transitory computer readable recording medium in which a security assessment program is recorded, the security assessment program causing a computer to execute so as to provide a duplicated environment which duplicates an assessment target system comprising a plurality of physical components, the security assessment program causing the computer to execute the steps of:

deciding a duplication level for each physical component based on constraints specified by a user in order to design the duplicated environment to produce a designed result indicative of a duplicated environment design, the duplication level indicating one of a simulation sub-module, an emulation sub-module, and a physical sub-module which are for reproducing the physical components of the assessment target system, deciding, in accordance with the constraints, which physical component should be assessed by the simulation sub-module, the emulation sub-module, or the physical sub-module, the constraints being requirements of budget, each physical component being associated with a monetary cost, whereby deciding the physical components as the physical sub-module, the emulation sub-module, and the simulation sub-module in ascending order of the monetary cost from cheapest, within the budget; and

constructing the duplicated environment based on the designed result, the duplicated environment comprises components which are duplicated by one of the duplication level.

10. The non-transitory computer readable recording medium as claimed in claim 9 ,

wherein the simulation sub-module comprises at least one of a specification of the physical component and a behavior model of a function of the physical component,

wherein the emulation sub-module comprises software which reproduces the physical component using a virtual machine, and

wherein the physical sub-module comprises at least one physical machine which is physically similar to the physical component in the assessment target system.