In recent years, ransomware has been one of the most notorious malware targeting end-
users, governments, and business organizations. It has become a very profitable business …

Covert communication enables covert information transmission in an undetectable way to
prevent the exposure of communication behaviors. Blockchain-based covert communication …

The botnet is a severe threat to computer networks, and the detection of botnet behaviors is
an important research area of cyber security. Malware authors leverage the Domain …