human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "security evaluation of cyber networks under advanced persistent threats"):
  Abstract: This paper is devoted to measuring the security of cyber networks under advanced persistent threats (APTs). First, an APT-based cyber attack-defense process is modeled as an individual-level dynamical system. Second, the dynamic model is shown to exhibit the global stability. On this basis, a new security metric of cyber networks, which is known as the limit security, is defined as the limit expected fraction of compromised nodes in the networks. Next, the influence of different factors on the limit security is illuminated through theoretical analysis and computer simulation. This work helps understand the security of cyber networks under APTs.

Includes members:
  Member "distributed interaction between computer virus and patch a modeling study":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "assessing the risk of advanced persistent threats")
  Member "analysis of the effectiveness of the truth spreading strategy for inhibiting rumors":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "assessing the risk of advanced persistent threats")
  Member "on the effectiveness of the truth spreading rumor blocking strategy for restraining rumors":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "assessing the risk of advanced persistent threats")
  Member "a discount strategy in word of mouth marketing and its assessment":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "assessing the risk of advanced persistent threats")
  Member "a stochastic model of active cyber defense dynamics":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "preventive and reactive cyber defense dynamics with ergodic time dependent parameters is globally attractive")
  Member "push and pull based epidemic spreading in networks thresholds and deeper insights":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "metrics towards measuring cyber agility")
  Member "optimizing active cyber defense":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "metrics towards measuring cyber agility")
  Member "preventive and reactive cyber defense dynamics is globally stable":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "preventive and reactive cyber defense dynamics with ergodic time dependent parameters is globally attractive")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.CR(Cryptography and Security)