Permissions in Sharepoint

[naveedadss]

I have a specific Usecase :

A Site has been created wherein Documents will be uploaded (Word, PPT, PDF, Excel). These will be shared outside of my organisation as read only access. This part is OK. 

The part which i am not able to figure out, these read only documents should not allow the reader copy anything from these documents. How do i manage that in Sharepoint?

[#2]

Hi, I don't think that is feasible, even they can screenshot the opened document and copy the content which we can't have control over it.

[#3]

@Sudharsan K  it should be possible. Sincei  am able to do so with labels in AIP , i should be able to bring that over here aswell. 

Just might need someone who has done this before to help here.