Bank Checks Fraud Detection Based on the Analysis of Event Trends in Data-Flow Systems Topics: Algorithms, software engineering and development; Case Studies; Financial Applications for Risk, Pricing, Disaster Analysis and Predictive Modeling ; Modeling, Experiments, Sharing Technologies & Platforms; Software engineering for security modeling, business process modeling and analytics In Proceedings of the 8th International Conference on Internet of Things, Big Data and Security IoTBDS - Volume 1, 97-104, 2023 , Prague, Czech Republic