Prevent copying or printing of downloaded pdf files

1. Is there any way to prevent copying or printing of a pdf file once it has been downloaded from one computer to another? 

File copying is something that happens at a level that doesn't need to know anything about the file format. File copying simply copies the bytes the file consists of to the target medium. Thus, you cannot prevent this. 

Hi @senseigk@budoshin.com,

Hope you are doing well. Thanks for writing in!

So, you can directly control how one uses an offline copy of a PDF file.

However, you can set security restrictions on the file from the start. To do so, go to Menu > Document Properties > Security tab > Change the security of the file as per your choice > restrict editing and printing on it (screenshot shared below).

More info can be found here: https://adobe.ly/4nilMho.

Hope this helps.