ItemConference Paper

D-GRAM: Dynamic Game-Theoretic Risk Modeling for Adaptive Cyber Defense

Title
D-GRAM: Dynamic Game-Theoretic Risk Modeling for Adaptive Cyber Defense
Creator
Rakesh, V.S.; Vijayan, Alpha; Ramalakshmi, K.; Ravi, G.H.; Santhrupth, B.C.; Varalakshmi, K.V.
Description
Cybersecurity threats are increasing in scale and sophistication, requiring strategic decision-making for cost-effective defense. This work presents a non-cooperative game-theoretic framework to model the interaction between a rational attacker and a defender with limited resources. Each player selects from a finite set of strategies, and payoffs are computed dynamically based on the probability of attack success, defense cost, and potential impact. A loss-risk relationship is used to populate the payoff matrix, ensuring that outcomes reflect realistic operational conditions. A mixed-strategy Nash equilibrium is calculated to determine optimal attack and defense probabilities, thereby balancing resource use and risk mitigation. To improve practicality, an adaptive defense mechanism is introduced, allowing the defender to update strategy probabilities incrementally based on observed attacker behavior. Sensitivity analysis reveals how equilibrium strategies adjust in response to variations in attack cost, defense cost, and impact severity. The results highlight how adaptive learning enhances resilience while minimizing unnecessary defense efforts, making the approach suitable for resource-constrained network environments. 2025 IEEE.
Source
2025 5th International Conference on Emerging Research in Electronics, Computer Science and Technology, ICERECT 2025;
Date
01-01-2025
Publisher
Institute of Electrical and Electronics Engineers Inc.
Subject
Adaptive defense; Cybersecurity modeling; Game theory; Nash equilibrium; Risk analysis
Coverage
Rakesh V.S., Cambridge Institute of Technology, K R Puram, Bengaluru, India; Vijayan A., Christ University, Department of Aiml & Ds, Bengaluru, India; Ramalakshmi K., Cambridge Institute of Technology, K R Puram, Bengaluru, India; Ravi G.H., Cambridge Institute of Technology, K R Puram, Bengaluru, India; Santhrupth B.C., Christ University, Department of Aiml & Ds, Bengaluru, India; Varalakshmi K.V., Cambridge Institute of Technology, K R Puram, Bengaluru, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISBN: 979-833153200-0;
Format
online
Language
English
Type
Conference paper

Citation

Rakesh, V.S.; Vijayan, Alpha; Ramalakshmi, K.; Ravi, G.H.; Santhrupth, B.C.; Varalakshmi, K.V., “D-GRAM: Dynamic Game-Theoretic Risk Modeling for Adaptive Cyber Defense,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 19, 2026, https://archives.christuniversity.in/items/show/25996.

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