It is a sad but unassailable fact that individual privacy and security for the many are two incompatible ideas. A  complete background check  for any purpose will of course, violate privacy. However, if these checks are not performed, everyone within an institution is put at risk.  This can be problematic for everyone. In most western countries, a complete background check for employment performed in most circumstances without the written consent of the person on whom it is to be performed. However, in some countries, these checks can be freely performed by anyone. The internet can reveal how each country treats the subject of these kinds of complete background check.