A look at Plum Island, a highly restricted island off the coast of New York City, where DARPA stages mock cyber attacks on the power grid every six months (Beatrice Christofaro/Business Insider)

Beatrice Christofaro / Business Insider:
A look at Plum Island, a highly restricted island off the coast of New York City, where DARPA stages mock cyber attacks on the power grid every six months  —  - Every six months, DARPA stages mock cyber attacks a highly restricted island off the coast of New York.