Drawing on 14 years of successful events on Information security, digital forensics and cybercrime, the 15th ICGS3-23 conference aims to provide attendees with an information-packed agenda with representatives from across the industry and the globe. The challenges of complexity, rapid pace of change and risk/opportunity issues associated with modern products, systems, special events and infrastructures. In an era of unprecedented volatile, political and economic environment across the world, computer based systems face ever more increasing challenges, disputes and responsibilities and while the Internet has created a global platform for the exchange of ideas, goods and services, however, it has also created boundless opportunities for cyber-crime. This book presents new materials and contributes to knowledge through the technological advances that are being made across artificial intelligence (AI), machine learning, blockchain and quantum computing. These technologies driven by a digital revolution are expected to be disruptive and provide major digital transformation in the way societies operate today. As a result, these advances provide social and economic benefits, but, also, provide new challenges that security industry need to raise their game to combat them.