In an increasingly interconnected world, the security of digital information has become paramount. Cryptography, the art of securing data through encryption, has long been the stronghold of safeguarding sensitive information. However, as technology advances, so do the methods of encryption. This book explores the fascinating intersection of deep learning and cryptanalysis, offering a comprehensive guide to leveraging artificial intelligence to unravel the secrets hidden within encrypted data. Machine learning-based cryptanalysis can be a fascinating area to explore. Cryptanalysis involves attempting to break cryptographic systems, while machine learning can offer unique insights and techniques to improve the process. To protect the data and ensure the confidentiality of sensitive information.