THESIS DEFENSE of Marie MORELLE-GERRITSEN - September 26, 2025

Cognitive warfare seeks to influence how we think and process information by using technological and digital tools such as social media and cyberattacks. It aims to manipulate our conception of the world, our decisions and our perceptions without us realizing it, in order to gain a strategic advantage.
The goal of this thesis is to create a decision support system to detect these manipulations and respond to them effectively. The work is structured into five steps: understanding cognitive warfare, studying decision and its biases, identifying the credibility factors of a text, determining relevant targets for cognitive warfare, and developing a real-time detection system. The ultimate goal is to build a technology that helps recognize and counter these influences.