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: "loophole timing attacks on shared event loops in chrome"
  Abstract: Event-driven programming (EDP) is the prevalent paradigm for graphical user interfaces, web clients, and it is rapidly gaining importance for server-side and network programming. Central components of EDP are {\em event loops}, which act as FIFO queues that are used by processes to store and dispatch messages received from other processes. #R##N#In this paper we demonstrate that shared event loops are vulnerable to side-channel attacks, where a spy process monitors the loop usage pattern of other processes by enqueueing events and measuring the time it takes for them to be dispatched. Specifically, we exhibit attacks against the two central event loops in Google's Chrome web browser: that of the I/O thread of the host process, which multiplexes all network events and user actions, and that of the main thread of the renderer processes, which handles rendering and Javascript tasks. #R##N#For each of these loops, we show how the usage pattern can be monitored with high resolution and low overhead, and how this can be abused for malicious purposes, such as web page identification, user behavior detection, and covert communication.

Connected through hyperedge HE-1 (induced by source paper "revisiting and evaluating software side channel vulnerabilities and countermeasures in cryptographic applications"):
  with members:
    - "when human cognitive modeling meets pins user independent inter keystroke timing attacks"
    - "identifying cache based side channels through secret augmented abstract interpretation"
    - "sgxpectre stealing intel secrets from sgx enclaves via speculative execution"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "meltdownprime and spectreprime automatically synthesized attacks exploiting invalidation based coherence protocols"
    - "verifying and synthesizing constant resource implementations with types"
    - "spectre attacks exploiting speculative execution"
    - "robust website fingerprinting through the cache occupancy channel"

Connected through hyperedge HE-2 (induced by source paper "pacer network side channel mitigation in the cloud"):
  with members:
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "obladi oblivious serializable transactions in the cloud"
    - "mitigating timing side channel in shared schedulers"
    - "robust and efficient elimination of cache and timing side channels"
    - "drama exploiting dram addressing for cross cpu attacks"
    - "k fingerprinting a robust scalable website fingerprinting technique"
    - "deterministically deterring timing attacks in deterland"

Connected through hyperedge HE-3 (induced by source paper "brokenstrokes on the in security of wireless keyboards"):
  with members:
    - "i send therefore i leak information leakage in low power wide area networks"
    - "software defined radios architecture state of the art and challenges"
    - "keydrown eliminating keystroke timing side channel attacks"
    - "don t skype type acoustic eavesdropping in voice over ip"
    - "flush flush a fast and stealthy cache attack"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "flush flush a fast and stealthy cache attack"
    - "drama exploiting dram addressing for cross cpu attacks"

Connected through hyperedge HE-4 (induced by source paper "when human cognitive modeling meets pins user independent inter keystroke timing attacks"):
  with members:
    - "flush flush a fast and stealthy cache attack"
    - "flush flush a fast and stealthy cache attack"
    - "armageddon cache attacks on mobile devices"
    - "drama exploiting dram addressing for cross cpu attacks"
    - "pin skimming exploiting the ambient light sensor in mobile devices"

Connected through hyperedge HE-5 (induced by source paper "a long way to the top significance structure and stability of internet top lists"):
  with members:
    - "an empirical survey on the early adoption of dns certification authority authorization"
    - "on the content security policy violations due to the same origin policy"
    - "most websites don t need to vibrate a cost benefit approach to improving browser security"
    - "what s in a name understanding profile name reuse on twitter"
    - "dial one for scam a large scale analysis of technical support scams"
    - "inferring individual attributes from search engine queries and auxiliary information"
    - "filteredweb a framework for the automated search based discovery of blocked urls"
    - "a churn for the better localizing censorship using network level path churn and network tomography"

Connected through hyperedge HE-6 (induced by source paper "undermining user privacy on mobile devices using ai"):
  with members:
    - "deepcloak adversarial crafting as a defensive measure to cloak processes"
    - "theory and practice of finding eviction sets"
    - "perfweb how to violate web privacy with hardware performance events"
    - "autolock why cache attacks on arm are harder than you think"
    - "memory dos attacks in multi tenant clouds severity and mitigation"
    - "flush flush a fast and stealthy cache attack"
    - "tensorflow a system for large scale machine learning"
    - "flush flush a fast and stealthy cache attack"

Connected through hyperedge HE-7 (induced by source paper "robust website fingerprinting through the cache occupancy channel"):
  with members:
    - "measuring information leakage in website fingerprinting attacks and defenses"
    - "spectre attacks exploiting speculative execution"
    - "automated website fingerprinting through deep learning"
    - "software grand exposure sgx cache attacks are practical"
    - "perfweb how to violate web privacy with hardware performance events"
    - "a software approach to defeating side channels in last level caches"
    - "inferring fine grained control flow inside sgx enclaves with branch shadowing"
    - "k fingerprinting a robust scalable website fingerprinting technique"

Connected through hyperedge HE-8 (induced by source paper "i2kit a tool for immutable infrastructure deployments based on lightweight virtual machines specialized to run containers"):
  with members:
    - "description and optimization of abstract machines in a dialect of prolog"

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)