Granted Patent B2

US 8,516,596 · App. 13/012,888 · Granted Aug 20, 2013

Abstract

Claims (118)

1. A method comprising:

receiving one or more cyber attack parameters, a cyber attack parameter describing a cyber attack scenario, the cyber attack parameters comprising at least one temporal parameter describing a temporal feature of the cyber attack scenario and a plurality of attack phases of the cyber attack scenario;

performing the following for each cyber defense of one or more cyber defenses to yield one or more sets of cyber attack metrics:

simulating the cyber attack scenario operating with a cyber defense, the simulation including: simulating a first attack phase of the cyber attack scenario against the cyber defense, and in response to the cyber attack overcoming the first cyber defense, simulating another of the plurality of attack phases of the cyber attack against the cyber defense; and

determining a set of cyber attack metrics describing the cyber attack scenario operating with the cyber defense in each attack phase of the cyber attack scenario, the set of cyber attack metrics including a phase time metric that measures the amount of time the cyber attack spends in each attack phase of the plurality of attack phases of the cyber attack scenario with the cyber defense; and

evaluating the one or more cyber defenses in accordance with the one or more sets of cyber attack metrics in each of the plurality of attack phases of the cyber attack scenario.

2. The method of claim 1 , further comprising:

simulating the cyber attack operating with no cyber defense; and

determining, prior to simulating the cyber attack scenario operating with a cyber defense, a baseline set of cyber attack metrics describing the cyber attack operating with no cyber defense.

3. The method of claim 1 , further comprising:

identifying an effective cyber defense from the one or more cyber defenses in response to the evaluating of the one or more cyber defenses; and

in response to identifying the effective cyber defense modifying a computer network using the effective cyber defense.

4. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first successful attacks metric that measures the number of successful attacks with a first cyber defense; and

determining a second successful attacks metric that measures the number of successful attacks with a second cyber defense, the first successful attacks indicating that the first cyber defense reduces the number of successful attacks more than the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on the first successful attack metric and the second successful attack metric.

5. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first partially successful attacks metric that measures the number of attack phases that are overcome by the cyber attack scenario with a first cyber defense; and

determining a second partially successful attacks metric that measures the number of attack phases that are overcome by the cyber attack scenario with a second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on the first partially successful attack metric and the second partially successful attack metric.

6. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first duration metric that measures the duration of the cyber attack with a first cyber defense; and

determining a second duration metric that measures the duration of the cyber attack with a second cyber defense, the first duration metric indicating that the first cyber defense is of a greater duration of the cyber attack than that of the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the first duration metric and the second duration metric.

7. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first attack disruptions metric that measures the number of attack disruptions with a first cyber defense; and

determining a second attack disruptions metric that measures the number of attack disruptions with a second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the first attack disruptions metric and the second attack disruptions metric.

8. The method of claim 1 :

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the phase time metric for the first cyber defense and the phase time metric for the second cyber defense.

9. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first efficiency metric that measures a ratio of how often the cyber attack is disrupted versus how often a defensive action is taken with a first cyber defense; and

determining a second efficiency metric that measures a ratio of how often the cyber attack is disrupted versus how often a defensive action is taken with a second cyber defense, the first efficiency metric indicating that the first cyber defense has a higher ratio than that of the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense.

10. The method of claim 1 :

the determining the set of cyber attack metrics comprising:

determining a first duration metric that measures a relative speed of execution between the cyber attack and a first cyber defense; and

determining a second duration metric that measures a relative speed of execution between the cyber attack and a second cyber defense, the first duration metric indicating that the first cyber defense having a higher relative speed than that of the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense.

11. The method of claim 1 , the set of cyber attack metrics comprising:

a utilization metric that measures utilization of one or more resources.

12. The method of claim 1 , the set of cyber attack metrics comprising:

an attack noise metric that measures one or more recurring cyber attack operations.

13. The method of claim 1 , the set of cyber attack metrics comprising:

a size metric that measures the size of a computer network of the cyber attack scenario.

14. A system comprising:

one or more memories operable to store one or more cyber attack parameters, a cyber attack parameter describing a cyber attack scenario, the cyber attack parameters comprising at least one temporal parameter describing a temporal feature of the cyber attack scenario; and

one or more processors operable to:

perform the following for each cyber defense of one or more cyber defenses to yield one or more sets of cyber attack metrics:

simulate the cyber attack scenario operating with a cyber defense, the simulation including: simulating a first attack phase of the cyber attack scenario against the cyber defense, and in response to the cyber attack overcoming the first cyber defense, simulating another of the plurality of attack phases of the cyber attack against the cyber defense; and

determine a set of cyber attack metrics describing the cyber attack scenario operating with the cyber defense in each attack phase of the cyber attack scenario, the set of cyber attack metrics including a phase time metric that measures the amount of time the cyber attack spends in each attack phase of the plurality of attack phases of the cyber attack scenario with the cyber defense; and

evaluate the one or more cyber defenses in accordance with the one or more sets of cyber attack metrics in each of the plurality of attack phases of the cyber attack scenario.

15. The method of claim 1 , wherein the attack phases comprise:

a footprint phase, a scanning phase, an enumeration phase, a gain access phase, an escalate privilege phase, and a pilfer phase.

16. The system of claim 14 , further comprising a simulator operable to:

simulate the cyber attack operating with no cyber defense; and

determine, prior to the simulation of the cyber attack scenario operating with a cyber defense, a baseline set of cyber attack metrics describing the cyber attack operating with no cyber defense.

17. The system of claim 14 , the one or more processors operable to:

identify an effective cyber defense from the one or more cyber defenses in response to the evaluation of the one or more cyber defenses; and

modify a computer network, in response to identification the effective cyber defense, to use the effective cyber defense.

18. The system of claim 14 :

the determining the set of cyber attack metrics comprising:

determining a first successful attacks metric that measures the number of successful attacks with a first cyber defense; and

determining a second successful attacks metric that measures the number of successful attacks with a second cyber defense, the first successful attacks indicating that the first cyber defense reduces the number of successful attacks more than the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on the first successful attack metric and the second successful attack metric.

19. The system of claim 14 :

the determining the set of cyber attack metrics comprising:

determining a first duration metric that measures the duration of the cyber attack with a first cyber defense; and

determining a second duration metric that measures the duration of the cyber attack with a second cyber defense, the first duration metric indicating that the first cyber defense is of a greater duration of the cyber attack than that of the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the first duration metric and the second duration metric.

20. The system of claim 14 :

the determining the set of cyber attack metrics comprising:

determining a first attack disruptions metric that measures the number of attack disruptions with a first cyber defense; and

determining a second attack disruptions metric that measures the number of attack disruptions with a second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the first attack disruptions metric and the second attack disruptions metric.

21. The system of claim 14 :

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense based at least in part on a comparison of the phase time metric for the first cyber defense and the phase time metric for the second cyber defense.

22. The system of claim 14 :

the determining the set of cyber attack metrics comprising:

determining a first efficiency metric that measures a ratio of how often the cyber attack is disrupted versus how often a defensive action is taken with a first cyber defense; and

determining a second efficiency metric that measures a ratio of how often the cyber attack is disrupted versus how often a defensive action is taken with a second cyber defense, the first efficiency metric indicating that the first cyber defense has a higher ratio than that of the second cyber defense; and

the evaluating the one or more cyber defenses comprising:

determining that the first cyber defense is more effective than the second cyber defense.

23. The system of claim 14 , the set of cyber attack metrics comprising:

a utilization metric that measures utilization of one or more resources.

24. The system of claim 14 , the set of cyber attack metrics comprising:

an attack noise metric that measures one or more recurring cyber attack operations.

25. The system of claim 14 , the set of cyber attack metrics comprising:

a size metric that measures the size of a computer network of the cyber attack scenario.

26. The system of claim 14 , wherein the attack phases comprise:

a footprint phase, a scanning phase, an enumeration phase, a gain access phase, an escalate privilege phase, and a pilfer phase.

27. One or more non-transitory computer readable storage media when executed by one or more processors operable to:

receive one or more cyber attack parameters, a cyber attack parameter describing a cyber attack scenario, the cyber attack parameters comprising at least one temporal parameter describing a temporal feature of the cyber attack scenario;

perform the following for each cyber defense of one or more cyber defenses to yield one or more sets of cyber attack metrics:

simulate the cyber attack scenario operating with a cyber defense, the simulation including: simulating a first attack phase of the cyber attack scenario against the cyber defense, and in response to the cyber attack overcoming the first cyber defense, simulating another of the plurality of attack phases of the cyber attack against the cyber defense; and

determine a set of cyber attack metrics describing the cyber attack scenario operating with the cyber defense in each attack phase of the cyber attack scenario, the set of cyber attack metrics including a phase time metric that measures the amount of time the cyber attack spends in each attack phase of the plurality of attack phases of the cyber attack scenario with the cyber defense; and

evaluate the one or more cyber defenses in accordance with the one or more sets of cyber attack metrics in each of the plurality of attack phases of the cyber attack scenario.

28. The media of claim 27 , operable to:

identify an effective cyber defense; and

modify a computer network using the effective cyber defense.

29. The media of claim 28 , wherein the attack phases comprise:

a footprint phase, a scanning phase, an enumeration phase, a gain access phase, an escalate privilege phase, and a pilfer phase.

Assignments (12)