Nevada DMV closes offices indefinitely after cyber attack disrupts network services  KRNVNevada state offices, statewide services crippled by cyberattack  KRNVNevada state government offices closed after network security incident  CNNNevada targeted in cyber attack; state, federal investigation underway  KLAS 8 News NowThird-party services wait to help fill gap during Nevada DMV disruptions  KSNV