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 "restoring the privacy and confidentiality of users over mobile collaborative learning mcl environment"):
  Abstract: Rogue DHCP server spreads the wrong network parameters that create the bridge for attackers to expose confidentiality and privacy. Trojans like DNS-changing installs the rogue DHCP server and pollutes the network. It provides the chances for attackers to use compromised resources on network. Rogue DHCP server creates several problems to expose the privacy of legitimate users. Two important attacks are shown in figure 1. The poster focuses on two of most important issues.

Includes members:
  Member "dynamic multi layer signature based intrusion detection system using mobile agents":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "discovery of malicious attacks to improve mobile collaborative learning mcl")
  Member "combining naive bayes and decision tree for adaptive intrusion detection":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "fusion of ann and svm classifiers for network attack detection")

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)