Algorithmic Cryptology and Data Protection is a comprehensive course designed to equip learners with the knowledge and skills essential for securing information systems and ICT networks. The course starts with a survey of classical cryptographic techniques and then delves into contemporary topics, covering symmetric block ciphers, public key cryptosystems, digital signatures, authentication protocols, and cryptographic hash functions. Learners will not only understand the fundamentals but also gain the ability to dissect algorithms, identifying potential vulnerabilities. Additionally, the course explores encryption and decryption using hashing functions, public and private keys, and addresses cutting-edge topics such as quantum-resistant cryptography and homomorphic encryption. Upon completion, participants will be well-prepared to protect their employers' critical information assets in an ever-evolving cyber threat landscape.