"Nurgsm" could be a:
Do not use a single word. Use four or five random words. Nurgsm Password
If "Nurgsm" was a typo for "Ngram," the paper might refer to research on Probabilistic Context-Free Grammars (PCFG) or Markov Chains in password cracking. "Nurgsm" could be a: Do not use a single word
"Nurg" is a root word associated with Nurgle, the Chaos God of disease, decay, and pestilence from the Warhammer 40,000 universe. A "Nurgsm password" could be an inside joke or a specific credential used in a modded server, a private forum, or a fan game. In this context, it would not be a security term but a piece of lore-based authentication. the Chaos God of disease