Are hill cipher matrices used in the 21st century?

Hill cipher matrices, a form of symmetric key cipher, are not commonly used in modern cryptography due to their vulnerability to various attacks, such as linear and differential cryptanalysis. While they serve as an educational tool for understanding basic encryption concepts, contemporary cryptographic practices favor more secure algorithms like AES (Advanced Encryption Standard) and RSA. These modern algorithms provide stronger security, efficiency, and are better suited for today's computational capabilities. However, Hill ciphers may still be explored in academic settings or for recreational cryptography.