The best replacement for nod32 is kaspersky.

The best alternatives to nod32 are rated as following:
★★★★★  kaspersky
★★★★  avast
★★★★  norton
★★★  avg
★★★  bitdefender
★★  smart security
★★  avira
★★  mse
★  vipre
★  mcafee
★  symantec
★  norton 360
  eset smart security
  webroot
  security essentials
  kaspersky 2013
  microsoft security essentials
  avg free
  sophos
  norton antivirus
  panda
  eset
  kasverksy
  reset smart security
  kav
  kaspersky 2012
  antivir
  trend
  kaspersky antivirus

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Speaking about nod32, one probably shouldn't forget about username and password.

Other search terms related to nod32 and their ratings are:
★★★★★ username and password
★★★ username and password free
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Google Trends

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nod32
kaspersky
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