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: "toward an efficient website fingerprinting defense"
  Abstract: Website Fingerprinting attacks enable a passive eavesdropper to recover the user's otherwise anonymized web browsing activity by matching the observed traffic with prerecorded web traffic templates. The defenses that have been proposed to counter these attacks are impractical for deployment in real-world systems due to their high cost in terms of added delay and bandwidth overhead. Further, these defenses have been designed to counter attacks that, despite their high success rates, have been criticized for assuming unrealistic attack conditions in the evaluation setting. In this paper, we propose a novel, lightweight defense based on Adaptive Padding that provides a sufficient level of security against website fingerprinting, particularly in realistic evaluation conditions. In a closed-world setting, this defense reduces the accuracy of the state-of-the-art attack from 91% to 20%, while introducing zero latency overhead and less than 60% bandwidth overhead. In an open-world, the attack precision is just 1% and drops further as the number of sites grows.

Connected through hyperedge HE-1 (induced by source paper "blind adversarial network perturbations"):
  with members:
    - "universal adversarial audio perturbations"
    - "one pixel attack for fooling deep neural networks"
    - "mockingbird defending against deep learning based website fingerprinting attacks with adversarial traces"
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "deepcorr strong flow correlation attacks on tor using deep learning"
    - "automated website fingerprinting through deep learning"
    - "var cnn and dynaflow improved attacks and defenses for website fingerprinting"
    - "adversarial examples are not easily detected bypassing ten detection methods"

Connected through hyperedge HE-2 (induced by source paper "mockingbird defending against deep learning based website fingerprinting attacks with adversarial traces"):
  with members:
    - "var cnn a data efficient website fingerprinting attack based on deep learning"
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "tik tok the utility of packet timing in website fingerprinting attacks"
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "automated website fingerprinting through deep learning"
    - "certified defenses against adversarial examples"
    - "obfuscated gradients give a false sense of security circumventing defenses to adversarial examples"
    - "adversarial examples are not easily detected bypassing ten detection methods"

Connected through hyperedge HE-3 (induced by source paper "adv dwf defending against deep learning based website fingerprinting attacks with adversarial traces"):
  with members:
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "automated website fingerprinting through deep learning"
    - "certified defenses against adversarial examples"
    - "obfuscated gradients give a false sense of security circumventing defenses to adversarial examples"
    - "adversarial examples are not easily detected bypassing ten detection methods"
    - "magnet and efficient defenses against adversarial attacks are not robust to adversarial examples"
    - "bayes not naive security bounds on website fingerprinting defenses"

Connected through hyperedge HE-4 (induced by source paper "var cnn a data efficient website fingerprinting attack based on deep learning"):
  with members:
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "accurate large minibatch sgd training imagenet in 1 hour"
    - "understanding deep learning requires rethinking generalization"
    - "inception v4 inception resnet and the impact of residual connections on learning"
    - "densely connected convolutional networks"
    - "wavenet a generative model for raw audio"
    - "tensorflow large scale machine learning on heterogeneous distributed systems"
    - "deep residual learning for image recognition"

Connected through hyperedge HE-5 (induced by source paper "tik tok the utility of packet timing in website fingerprinting attacks"):
  with members:
    - "var cnn a data efficient website fingerprinting attack based on deep learning"
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "techniques for interpretable machine learning"
    - "understanding tor usage with privacy preserving measurement"
    - "automated website fingerprinting through deep learning"
    - "how unique is your onion an analysis of the fingerprintability of tor onion services"
    - "k fingerprinting a robust scalable website fingerprinting technique"

Connected through hyperedge HE-6 (induced by source paper "encrypted dns privacy a traffic analysis perspective"):
  with members:
    - "analyzing the costs and benefits of dns dot and doh for the modern web"
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "oblivious dns practical privacy for dns queries"
    - "automated website fingerprinting through deep learning"
    - "how unique is your onion an analysis of the fingerprintability of tor onion services"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "i know why you went to the clinic risks and realization of https traffic analysis"

Connected through hyperedge HE-7 (induced by source paper "measuring information leakage in website fingerprinting attacks and defenses"):
  with members:
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "bayes not naive security bounds on website fingerprinting defenses"
    - "the effect of dns on tor s anonymity"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "efficient estimation of mutual information for strongly dependent variables"
    - "comparing bayesian network classifiers"

Connected through hyperedge HE-8 (induced by source paper "padding ain t enough assessing the privacy guarantees of encrypted dns"):
  with members:
    - "deep fingerprinting undermining website fingerprinting defenses with deep learning"
    - "the effect of dns on tor s anonymity"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "evaluating the security of a dns query obfuscation scheme for private web surfing"

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)