You may have the most stringent privacy settings possible, but if your friend's account gets compromised than those settings go out the window.
Ị nwere ike ịnwe mmemme ntọala kachasị ike, ma ọ bụrụ na akaụntụ enyi gị na-adịwanye ala karịa ntọala ndị ahụ, esi na windo ahụ pụta.