Attack impact prediction system

• US 20060010493A1
• Filed: 04/01/2003
• Published: 01/12/2006
• Est. Priority Date: 04/01/2003
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Walsh, Julia H., Piesco, Albert L.
• Granted Patent: US 7,281,270 B2
• Time in Patent Office: Days
• US Class Current: 726/23
• CPC Class Codes: G06F 21/552 involving long-term monitoring or reporting
• CPC Class Codes: H04L 63/1416 Event detection, e.g. attack signature detection
• CPC Class Codes: H04L 63/1441 Countermeasures against malicious traffic countermeasures against attacks on cryptographic mechanisms H04L9/002

Abstract

An attack impact prediction system for providing network security for computer networks is disclosed. A computer network includes multiple attack impact prediction (AIP) agents. In response to a detection of an intrusion to a computer network, an AIP agent is notified of the intrusion. In turn, the AIP agent broadcasts the detected intrusion to other AIP agents within the computer network. An impact of the detected intrusion is then determined at each node by its respective AIP agent. In response to a determination that an impact of the detected intrusion on a node exceeds a predetermined severity threshold, then actions need to be taken by each respective AIP agent is ascertained. Finally, the ascertained actions are performed by one or more AIP agents at various points within the computer network.

Claims

1. A method for providing network security for a computer network, said method comprising:

in response to a detection of an intrusion to a computer network, notifying an attack impact prediction (AIP) agent of said detected intrusion;

broadcasting said detected intrusion to other AIP agents within said computer network by said AIP agent;

determining an impact of said detected intrusion at each node of said computer network by each node'"'"'s respective AIP agent;

in response to a determination that an impact of said detected intrusion on a node exceeds a predetermined severity threshold, ascertaining an action to be taken by an AIP agent associated with said node; and

performing said ascertained action by said AIP agent associated with said node.

2. The method of claim 1, wherein said broadcasting further includes notifying an agent monitor of said intrusion by said AIP agent.

3. The method of claim 1, wherein said broadcasting further includes broadcasting a type, a source and a target of said intrusion to other AIP agents by said AIP agent.

4. The method of claim 1, wherein said determining further includes utilizing a risk equation to calculate a Severity value as follows:

Severity=(Criticality+Lethality)−

(System Countermeasures+Network Countermeasures)

5. The method of claim 1, wherein said performing further includes reporting said determined action to said agent monitor by said agent associated with said node.

6. A computer program product residing on a computer usable medium for providing network security for a computer network, said computer program product comprising:

program code means for notifying an attack impact prediction (AIP) agent of said detected intrusion, in response to a detection of an intrusion to a computer network;

program code means for broadcasting said detected intrusion to other AIP agents within said computer network by said AIP agent;

program code means for determining an impact of said detected intrusion at each node of said computer network by each node'"'"'s respective AIP agent;

program code means for ascertaining an action to be taken by an AIP agent associated with said node, in response to a determination that an impact of said detected intrusion on a node exceeds a predetermined severity threshold; and

program code means for performing said ascertained action by said AIP agent associated with said node.

7. The computer program product of claim 6, wherein said program code means for broadcasting further includes program code means for notifying an agent monitor of said intrusion by said AIP agent.

8. The computer program product of claim 6, wherein said program code means for broadcasting further includes program code means for broadcasting a type, a source and a target of said intrusion to other AIP agents by said AIP agent.

9. The computer program product of claim 6, wherein said program code means for determining further includes a risk equation for calculating a Severity value as follows:

Severity=(Criticality+Lethality)−

(System Countermeasures+Network Countermeasures)

10. The computer program product of claim 6, wherein said program code means for performing further includes program code means for reporting said determined action to said agent monitor by said agent associated with said node.

11. A computer network having a network security, said computer system comprising:

means for notifying an attack impact prediction (AIP) agent of said detected intrusion, in response to a detection of an intrusion to a computer network;

means for broadcasting said detected intrusion to other AIP agents within said computer network by said AIP agent;

means for determining an impact of said detected intrusion at each node of said computer network by each node'"'"'s respective AIP agent;

means for ascertaining an action to be taken by an AIP agent associated with said node, in response to a determination that an impact of said detected intrusion on a node exceeds a predetermined severity threshold; and

means for performing said ascertained action by said AIP agent associated with said node.

12. The computer network of claim 11, wherein said means for broadcasting further includes program code means for notifying an agent monitor of said intrusion by said AIP agent.

13. The computer network of claim 12, wherein said means for broadcasting further includes means for broadcasting a type, a source and a target of said intrusion to other AIP agents by said AIP agent.

14. The computer network of claim 11, wherein said means for determining further includes a risk equation for calculating a Severity value as follows:

Severity=(Criticality+Lethality)−

(Computer network Countermeasures+Network Countermeasures)

15. The computer network of claim 11, wherein said means for performing further includes means for reporting said determined action to said agent monitor by said agent associated with said node.