Worldwide computer crimes cost organizations and governments billions of dollars each year. In response, organizations use a plethora of heterogeneous security devices and software such as firewalls, Intrusion Detection Systems (IDS), and Security Information and Event Management (SIEM) to monitor networks in conjunction with Computer Security Incident Response Teams (CSIRT) that are responsible for ensuring availability, integrity, and confidentiality of network services. Situational Awareness in Computer Network Defense: Principles, Methods and Applications provides academia and organizations insights into practical and applied solutions, frameworks, technologies, and implementations for situational awareness in computer networks. This book presents situational awareness solutions in Computer Network Defense (CND) currently being researched or deployed. The key objective is to fill a gap that exists in the way CND and security are being approached by formalizing the use of situational awareness in computer network security and defense.

This book highlights advances in Cyber Security, Cyber Situational Awareness (CyberSA), Artificial Intelligence (AI) and Social Media. It brings together original discussions, ideas, concepts and outcomes from research and innovation from multidisciplinary experts. It offers topical, timely and emerging original innovations and research results in cyber situational awareness, security analytics, cyber physical systems, blockchain technologies, machine learning, social media and wearables, protection of online digital service, cyber incident response, containment, control, and countermeasures (CIRC3). The theme of Cyber Science 2022 is Ethical and Responsible use of AI. Includes original contributions advancing research in Artificial Intelligence, Machine Learning, Blockchain, Cyber Security, Social Media, Cyber Incident Response & Cyber Insurance. The Chapters "Municipal Cybersecurity - A Neglected Research Area? A Survey of Current Research, The Transnational Dimension of Cyber Security: The NIS Directive and its Jurisdictional Challenges, Refining the Mandatory Cybersecurity Incident Reporting under the NIS Directive 2.0: Event Types and Reporting Processes" are available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

This introductory text teaches foundational concepts in numerical mathematics. It uses real-world examples, representational graphs, solved tutorials, practice problems, flow diagrams, algorithms and computer programs to enrich knowledge and strengthen understanding. It covers contemporary numerical method techniques, such as root finding methods, difference calculus and interpolation principle. It explains existing traditional techniques used in solving engineering and process-based tasks involving numerical differentiation and integration, such as Euler's method, rectangular method, trapezium method and the Runge-Kutta family of methods. It discusses initial value problems, uniform partition, non-uniform partition, Cauchy equation, Lagrange interpolation and boundary value problems. Finally, it also covers root finding methods including fixed-point, bisection, regula- falsi, Secant and Newton methods. The book is ideal as a one-semester text on numerical methods and its related disciplines. It is also relevant to other readers as a reference manual.

Computer network security is concerned with safeguards, responses and controls to prevent, react and respond to attacks perceived on valued information assets. Unfortunately, current technical controls use by enterprises to protect their IT investments are often stand-alone systems whose independent protection are either isolated or localised, and insufficient in adequately protecting these assets. This book discusses an approach to security defence that combines and integrates the defences offered by stand-alone countermeasure systems to adequately detect widespread attacks. An integrated security framework is investigated that is underpinned by sensor, analysis and response defence paradigm. In the framework, sensors gather pieces of attack evidence perceived on the entire network and communicate their beliefs to the analysis component. At the analysis component, beliefs from sensors are correlated and combined to detect and identify perceived attacks; while responses are executed to mitigate the perceived attacks. This book is intended for students, researchers, security consultants, engineers, administrators and analysts.