# Optimal and Game-Theoretic Deployment of Security Investments in Interdependent Assets

@inproceedings{Hota2016OptimalAG, title={Optimal and Game-Theoretic Deployment of Security Investments in Interdependent Assets}, author={Ashish Ranjan Hota and Abraham A. Clements and Shreyas Sundaram and Saurabh Bagchi}, booktitle={GameSec}, year={2016} }

We introduce a game-theoretic framework to compute optimal and strategic security investments by multiple defenders. Each defender is responsible for the security of multiple assets, with the interdependencies between the assets captured by an interdependency graph. We formulate the problem of computing the optimal defense allocation by a single defender as a convex optimization problem, and establish the existence of a pure Nash equilibrium of the game between multiple defenders. We apply our…

## 19 Citations

### A Network Monitoring Game with Heterogeneous Component Criticality Levels

- Economics2019 IEEE 58th Conference on Decision and Control (CDC)
- 2019

This work considers an attacker-operator game for monitoring a large–scale network that is comprised of components that differ in their criticality levels and uses a previously developed approach to obtain an approximate Nash equilibrium in the general case.

### A Cyber-Security Investment Game for Networked Control Systems

- Computer Science2019 American Control Conference (ACC)
- 2019

A general-sum, two-player, mixed strategy (MS) game, where the attacker attempts to destroy communication equipment of some nodes, and thereby render the LQR feedback gain matrix to be sparse, leading to degradation of closed-loop performance.

### Network Inspection Using Heterogeneous Sensors for Detecting Strategic Attacks

- Computer ScienceProceedings of the Annual Hawaii International Conference on System Sciences
- 2022

This work analytically characterize Nash equilibria of this large-scale zero-sum game when every vulnerable network component can be monitored from a unique sensor location and designs a heuristic solution approach based on minimum set covers for computing inspection strategies in general.

### Network Inspection from Locations with Imperfect Detection Capabilities

- Computer Science2022 American Control Conference (ACC)
- 2022

This work analytically characterize Nash equilibria of this zero-sum game when the monitoring sets are mutually disjoint and shows how the criticality of network components jointly depends on both players’ resources, detection rates, and the network topology.

### A game theoretic model of computer network exploitation campaigns

- Computer Science2018 IEEE 8th Annual Computing and Communication Workshop and Conference (CCWC)
- 2018

A dynamic, asymmetric, complete-information, general-sum game to model CNE campaigns and techniques to estimate this game's parameters are proposed.

### BASCPS: How does behavioral decision making impact the security of cyber-physical systems?

- Computer ScienceArXiv
- 2020

It is shown that behavioral decision making leads to a suboptimal pattern of resource allocation compared to non-behavioral decision making, and that selfish defense decisions together with behavioral decisions significantly increase security risk.

### Combining Hybrid Input-Output Automaton and Game Theory for Security Modeling of Cyber-Physical Systems

- Computer ScienceArXiv
- 2020

This work considers a security setting in which the CyberPhysical System (CPS) is composed of subnetworks where each subnetwork is under ownership of one defender and model such CPS using Hybrid Input-Output Automaton (HIOA) where eachSubnetwork is represented by a HIOA module.

### Morshed: Guiding Behavioral Decision-Makers towards Better Security Investment in Interdependent Systems

- Computer ScienceAsiaCCS
- 2021

We model the behavioral biases of human decision-making in securing interdependent systems and show that such behavioral decision-making leads to a suboptimal pattern of resource allocation compared…

### On a Generic Security Game Model

- Computer ScienceArXiv
- 2018

A game model which is generic enough to capture various modes of engagement/interactions between users and network administrators as games and the conditions for formulating the strategies when dealing with more than one attacker and making collaborations are presented.

### A Hybrid Attack Model for Cyber-Physical Security Assessment in Electricity Grid

- Computer Science2019 IEEE Texas Power and Energy Conference (TPEC)
- 2019

A novel Hybrid Attack Model (HAM) that combines Probabilistic Learning Attacker, Dynamic Defender, PLADD model and a Markov Chain model to simulate the planning and execution stages of a bad data injection attack in power grid is introduced.

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