It's easier just to sniff traffic. Wait, did I say that out loud?Unless your parents have direct access to log into your Mac when you're not there.
i don't know if its a good reason to interfere the life of others by monitoring the emails and other stuffs... i'm suspecting my parents but even them, they don't right to hack my emails. if i cant detect the SniperSpy, hopefully it will be gone if i reformat it
Well unfortunately, if you're under 18, using a computer they bought you, or living in their house, they have the right to do whatever they want.
Now whether they should or not is open to debate, not whether they have the right to do so.