human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "avoiding the man on the wire improving tor s security with trust aware path selection"
  Abstract: Tor users are vulnerable to deanonymization by an adversary that can observe some Tor relays or some parts of the network. We propose that users use trust to choose paths through Tor that are less likely to be observed. We present a system to model this trust as probability distributions on the location of the user's adversaries. We propose the Trust-Aware Path Selection algorithm for Tor that helps users avoid traffic-analysis attacks while still choosing paths that could have been selected by many other users. We evaluate this algorithm in two settings using a high-level map of Internet routing: (i) users try to avoid a single global adversary that has an independent chance to control each Autonomous System organization, Internet Exchange Point organization, and Tor relay family, and (ii) users try to avoid deanonymization by any single country. We also examine the performance of trust-aware path selection using the Shadow Tor network simulator.

Connected through hyperedge HE-1 (induced by source paper "tempest temporal dynamics in anonymity systems"):
  with members:
    - "onions in the crosshairs when the man really is out to get you"
    - "raptor routing attacks on privacy in tor"
    - "measuring and mitigating as level adversaries against tor"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "hornet high speed onion routing at the network layer"
    - "dovetail stronger anonymity in next generation internet routing"
    - "defending tor from network adversaries a case study of network path prediction"
    - "stealthy traffic analysis of low latency anonymous communication using throughput fingerprinting"

Connected through hyperedge HE-2 (induced by source paper "shedding light on the dark corners of the internet a survey of tor research"):
  with members:
    - "spoiled onions exposing malicious tor exit relays"
    - "the fifteen year struggle of decentralizing privacy enhancing technology"
    - "effectiveness and detection of denial of service attacks in tor"
    - "one bad apple spoils the bunch exploiting p2p applications to trace and profile tor users"

Connected through hyperedge HE-3 (induced by source paper "towards predicting efficient and anonymous tor circuits"):
  with members:
    - "counter raptor safeguarding tor against active routing attacks"
    - "raptor routing attacks on privacy in tor"
    - "measuring and mitigating as level adversaries against tor"

Connected through hyperedge HE-4 (induced by source paper "forming guard sets using as relationships"):
  with members:
    - "raptor routing attacks on privacy in tor"
    - "defending tor from network adversaries a case study of network path prediction"

Question: Please tell me which class the center node 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)