The content of this course includes information content acquisition, information encryption technology, information hiding, digital watermarking, text content security, image content security, audio content security, video content security, and big data content security, etc. We hope that students can master information content confidentiality, digital content copyright protection, digital anti-counterfeiting, information content authenticity identification, deepfake and the application of the artificial intelligence in information content security. In addition, we hope the students can know the big data security and network sentiment analysis, and improve their interest in information content security, and obtain a good foundation in information processing and security related fields in the future.