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 "behavioral security in covert communication systems"):
  Abstract: The purpose of the covert communication system is to implement the communication process without causing third party perception. In order to achieve complete covert communication, two aspects of security issues need to be considered. The first one is to cover up the existence of information, that is, to ensure the content security of information; the second one is to cover up the behavior of transmitting information, that is, to ensure the behavioral security of communication. However, most of the existing information hiding models are based on the "Prisoners' Model", which only considers the content security of carriers, while ignoring the behavioral security of the sender and receiver. We think that this is incomplete for the security of covert communication. In this paper, we propose a new covert communication framework, which considers both content security and behavioral security in the process of information transmission. In the experimental part, we analyzed a large amount of collected real Twitter data to illustrate the security risks that may be brought to covert communication if we only consider content security and neglect behavioral security. Finally, we designed a toy experiment, pointing out that in addition to most of the existing content steganography, under the proposed new framework of covert communication, we can also use user's behavior to implement behavioral steganography. We hope this new proposed framework will help researchers to design better covert communication systems.

Includes members:
  Member "real time steganalysis for stream media based on multi channel convolutional sliding windows":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "hierarchical representation network for steganalysis of qim steganography in low bit rate speech signals")
  Member "ts rnn text steganalysis based on recurrent neural networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "istego100k large scale image steganalysis dataset")
  Member "ts cnn text steganalysis from semantic space based on convolutional neural network":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "ts rnn text steganalysis based on recurrent neural networks")
  Member "automatically generate steganographic text based on markov model and huffman coding":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "real time steganalysis for stream media based on multi channel convolutional sliding windows")
  Member "lost in the digital wild hiding information in digital activities":
    also connected through other hyperedges:
      (none)
  Member "aag stega automatic audio generation based steganography":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "istego100k large scale image steganalysis dataset")

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)