How to get rid of a shared folder on Mac How to remove Shared folder with bsozasss files? I somehow got this from my second PC and have no idea how and what this is? How can I remove this and disable this kind of sharing? I am on El Capitan. 

Here is the screenshoot:
Open a Finder window, then open preferences (Finder > Preferences...). Go to the 'Sidebar' tab and uncheck the options under 'Shared':



If you want to make sure your computer doesn't appear on other computers like this, go to System Preferences > Sharing and uncheck File Sharing: