Security Evaluation of the Cyber Networks under Advanced Persistent Threats

Lu Xing Yang, Pengdeng Li, Xiaofan Yang*, Yuan Yan Tang

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)
18 Downloads (Pure)


Advanced persistent threats (APTs) pose a grave threat to cyberspace, because they deactivate all the conventional cyber defense mechanisms. This paper addresses the issue of evaluating the security of the cyber networks under APTs. For this purpose, a dynamic model capturing the APT-based cyber-attack-defense processes is proposed. Theoretical analysis shows that this model admits a globally stable equilibrium. On this basis, a new security metric known as the equilibrium security is suggested. The impact of several factors on the equilibrium security is revealed through theoretical analysis or computer simulation. These findings contribute to the development of feasible security solutions against APTs.

Original languageEnglish
Article number8053761
Pages (from-to)20111-20123
Number of pages13
JournalIEEE Access
Publication statusPublished - 2017


  • Cyberspace
  • measurement
  • nonlinear dynamical systems
  • security
  • stability


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