Ransomware can affect Linux users due to the open source code of Unix-based systems, which enables the system user to alter the program to limit the spread of the malicious code in the system.
However, developing ransomware that can affect other operating systems would not be a problem. Also, thanks to a vibrant developer community, any systemic flaw is promptly fixed. Users of Windows typically lack the technical know-how to solve such problems on their own and must rely on updates from one firm to assist them. Linux and Unix users are, therefore, less likely to be affected.