1) Very few undergraduates majoring in CS choose law as his professional degree due to the lure of quick pay in the IT industry. Therefore, armed with both CS and JD would give the kid an edge from the get-go.
2) Worst case scenario: become a patent attorney and defend clients such as Google or Apple against Samsung or HuaWei in high-profile law suits around the world.
3) The society is in desperate need of cyber-space-savvy legal professionals. For example, there is a plethora of new ways of human-to-human, human-to-computer and computer-to-computer interactions surfacing every year (iPhone, iWatch, maybe iWife). These new tools and the ways user use them in terms of privacy law, national or international law may not be well-understood by legal professionals since they lack the knowledge or insight of the new tools/interactions. There is no simple equivalent of such cyber-space related new phenomena. Most dominant opinions of the IT community are that, when dealing with new cyber legal cases, lawyers, judges and even legislators have done something extremely strange, showing the lack of understanding of the technology or the potential thereof. The most prominent and well-known are the Illegal prime and AACS encryption key controversy. The Wassenaar arrangements are trying to regulate security and encryption tools as weapons internationally, and so on. Therefore, this would be a new battle field for those smart lawyers who understand the IT industry and legal consequences. That would be the new frontier, IMHO.