What was the nature of the attack? Trojan? Modified/hacked real application? Web-based drive-by? USB drive infection?
What was its introduction vector - network, human, etc.?
Is it Windows-specific really -- i.e. an executable that only runs on Windows? Or is it only that it's presently tuned to Windows and could be readily tuned for Linux or Mac?
Was the damage at Sony done to the hard drives (hardware) or the drive format structure (filesystem) or the data stored in the filesystem (files, databases)?
Without more info, this is just a nebulous scary "Look out!" of little value....