Laws never need to be modernized. With new technology should never come new laws, because right and wrong always stay the same. It's already illegal to stalk and harass people, regardless of the means. We don't need a new law, we need to enforce the old ones.
Software? from the dawn of man, theft has been illegal. Beyond that, it's illegal to infringe on another's patents. If you need to protect your assets, it's up to YOU THE CREATOR/PRODUCER to do this, or secure your tie to the software/art in question.
Nukes? Nuclear weaponry, and eventually better are an enevitable part of our future. We need to defend our countries from these things and let it be known that threatening action will be met with harsh consequences.
guns, cars, tobacco and alcohol? Yeah, it's good to keep certain things from people to a certain age or mental stability. But this is about endangering human lives, which should be an exception.