ABSTRACT The article constitutes an attempt to answer the question contained in the title, by reference to three example topics: individual privacy, ownership of software, and computer ‘hacking’. The ethical question is approached via the legal one of whether special, computer–specific legislation is appropriate. The conclusion is in the affirmative, and rests on the claim that computer technology has brought with it, not so much the potential for committing totally new kinds of crimes, as a distinctive set of linguistic and conceptual apparatus which makes it necessary to describe computer–related activity in spe