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: "hijacking bitcoin large scale network attacks on cryptocurrencies"
  Abstract: Bitcoin is without a doubt the most successful cryptocurrency in circulation today, making it an extremely valuable target for attackers. Indeed, many studies have highlighted ways to compromise one or several Bitcoin nodes. In this paper, we take a different perspective and study the effect of large-scale network-level attacks such as the ones that may be launched by Autonomous Systems (ASes). #R##N#We show that attacks that are commonly believed to be hard, such as isolating 50% of the mining power, are actually within the reach of anyone with access to a BGP-enabled network and hijacking less than 900 prefixes. Once on path, AS-level adversaries can then partition the Bitcoin network or delay block propagation significantly. The key factors that enable these attacks are the extreme centralization of Bitcoin, both from a routing and a mining perspective, along with the fact that Bitcoin messages are sent unencrypted, without integrity guarantees. #R##N#We demonstrate the feasibility of large-scale attacks in practice against the deployed Bitcoin software and quantify their disruptive network-wide impact. The potential damage to Bitcoin is severe. By isolating a part of the network or delaying the propagation of blocks, network-level attackers can cause a significant amount of mining power to be wasted, leading to revenue losses and enabling a wide range of attacks such as double spending. We provide several suggestions on approaches to mitigate such attacks employing both short-term and long-term measures.

Connected through hyperedge HE-1 (induced by source paper "threshold logical clocks for asynchronous distributed coordination and consensus"):
  with members:
    - "sok transparent dishonesty front running attacks on blockchain"
    - "validated asynchronous byzantine agreement with optimal resilience and asymptotically optimal time and word communication"
    - "blockmania from block dags to consensus"
    - "towards more reliable bitcoin timestamps"
    - "coconut threshold issuance selective disclosure credentials with applications to distributed ledgers"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "on reducing the complexity of matrix clocks"
    - "secure history preservation through timeline entanglement"

Connected through hyperedge HE-2 (induced by source paper "hijacking routes in payment channel networks a predictability tradeoff"):
  with members:
    - "discharged payment channels quantifying the lightning network s resilience to topology based attacks"
    - "decentralization in bitcoin and ethereum networks"
    - "a survey on the security of blockchain systems"
    - "improving the betweenness centrality of a node by adding links"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "analysis of hashrate based double spending"

Connected through hyperedge HE-3 (induced by source paper "dandelion lightweight cryptocurrency networking with formal anonymity guarantees"):
  with members:
    - "dandelion redesigning the bitcoin network for anonymity"
    - "anonymity properties of the bitcoin p2p network"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "deanonymisation of clients in bitcoin p2p network"
    - "bitcoin over tor isn t a good idea"
    - "spy vs spy rumor source obfuscation"
    - "a robust information source estimator with sparse observations"
    - "pisces anonymous communication using social networks"

Connected through hyperedge HE-4 (induced by source paper "ccp conflicts check protocol for bitcoin block security"):
  with members:
    - "analysis of hashrate based double spending"

Connected through hyperedge HE-5 (induced by source paper "dandelion redesigning the bitcoin network for anonymity"):
  with members:
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "deanonymisation of clients in bitcoin p2p network"
    - "bitcoin over tor isn t a good idea"
    - "spy vs spy rumor source obfuscation"
    - "locating contagion sources in networks with partial timestamps"
    - "a robust information source estimator with sparse observations"
    - "locating the source of diffusion in large scale networks"
    - "max product for maximum weight matching convergence correctness and lp duality"

Connected through hyperedge HE-6 (induced by source paper "blockbench a framework for analyzing private blockchains"):
  with members:
    - "ustore a distributed storage with rich semantics"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "bitcoin ng a scalable blockchain protocol"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-7 (induced by source paper "towards better understanding of bitcoin unreachable peers"):
  with members:
    - "hijacking bitcoin routing attacks on cryptocurrencies"

Connected through hyperedge HE-8 (induced by source paper "enhancing bitcoin security and performance with strong consistency via collective signing"):
  with members:
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "bitcoin ng a scalable blockchain protocol"
    - "keeping authorities honest or bust with decentralized witness cosigning"
    - "centrally banked cryptocurrencies"
    - "bitcoin meets strong consistency"
    - "majority is not enough bitcoin mining is vulnerable"

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.NI(Networking and Internet Architecture)