K.I.S.S.
Within every discipline or profession exists its own code of ethics. Most of these disciplines require coursework designed to enlighten and edify as to the ethical specifics of said discipline and the consequences for the breach of such.
Within society, a very similar, yet perhaps broader code exists, that one could argue is the sum of all legalities instituted for the good of all; legal vs. illegal, right vs. wrong, good vs. bad. Several wise men have suggested that ethical considerations surrounding these dichotomies should focus on property, either real or personal, although universally accepted definitions of each have proven elusive.
Aditionally, a grey (#notmychristian) area exists, however, when a child is raised without the guidance of a functioning moral compass and a behavior or action has somehow slipped through a judicial loophole, making its ethical position a bit more nebulous. What then?
I submit that all people could be governed by one simple ethical expectation. I learned it as a boy and while many times chose to ignore its value, continue to extol its virtues.
Do unto others as you would have them do unto you. Matthew 7:12
Also known as The Golden Rule, the power and impact of this nugget is all too often overlooked, overshadowed, or ignored outright. I'll concede that I am rather simple and naïve, but will forever believe that this is all the ethics mankind should ever need.