All that happened is that the World knows that he is a criminal. His right to privacy doesn't mean the right to conceal his misdeeds from the rest of us, nor the right for us to keep silent about it.
No, just because you become a criminal doesn't mean you lose your right to privacy. Whether the act itself was unlawful or not doesn't really matter (to a certain extent).
To compound matters, a person not convicted of a crime by a court of law is a suspect who may or may not know the laptop they are using is stolen goods. I think its wrong to treat suspects as though they are convicted criminals. Presumed innocent before guilty and all that.