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: "oo7 low overhead defense against spectre attacks via binary analysis"
  Abstract: The Spectre vulnerability in modern processors has been widely reported. The key insight in this vulnerability is that speculative execution in processors can be misused to access secrets speculatively. Subsequently even though the speculatively executed instructions are squashed, the secret may linger in micro-architectural states such as cache, and can potentially be accessed by an attacker via side channels. We propose oo7, a static analysis approach that can mitigate Spectre attacks by detecting potentially vulnerable code snippets in program binaries and protecting them against the attack. We employ control flow extraction, taint analysis and address analysis to detect tainted conditional branches and speculative memory accesses. oo7 can detect all fifteen purpose-built Spectre-vulnerable code patterns [1], whereas Microsoft compiler with Spectre mitigation option can only detect two of them. We also report the results of a large-scale study on applying oo7 to over 500 program binaries (average binary size 261 KB) from different real-world projects. We protect programs against Spectre attack by selectively inserting fences only at vulnerable conditional branches to prevent speculative execution. Our approach is experimentally observed to incur around 4% performance overheads on SPECint 2006 benchmarks. Finally, we demonstrate that our approach is flexible and can be tuned to detect many other emerging Spectre variants, as well as Meltdown and Foreshadow attacks.

Connected through hyperedge HE-1 (induced by source paper "zombieload cross privilege boundary data sampling"):
  with members:
    - "smotherspectre exploiting speculative execution through port contention"
    - "fallout reading kernel writes from user space"
    - "store to leak forwarding leaking data on meltdown resistant cpus"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "spectector principled detection of speculative information flows"
    - "spectre attacks exploiting speculative execution"

Connected through hyperedge HE-2 (induced by source paper "speccfi mitigating spectre attacks using cfi informed speculation"):
  with members:
    - "context leakage free transient execution"
    - "smotherspectre exploiting speculative execution through port contention"
    - "store to leak forwarding leaking data on meltdown resistant cpus"
    - "zombieload cross privilege boundary data sampling"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "safespec banishing the spectre of a meltdown with leakage free speculation"
    - "spectre attacks exploiting speculative execution"

Connected through hyperedge HE-3 (induced by source paper "towards constant time foundations for the new spectre era"):
  with members:
    - "abstract interpretation under speculative execution"
    - "spectre is here to stay an analysis of side channels and speculative execution"
    - "store to leak forwarding leaking data on meltdown resistant cpus"
    - "zombieload cross privilege boundary data sampling"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "inspectre breaking and fixing microarchitectural vulnerabilities by formal analysis"
    - "eliminating timing side channel leaks using program repair"
    - "speculative buffer overflows attacks and defenses"

Connected through hyperedge HE-4 (induced by source paper "kleespectre detecting information leakage through speculative cache attacks via symbolic execution"):
  with members:
    - "abstract interpretation under speculative execution"
    - "symbolic verification of cache side channel freedom"
    - "spectector principled detection of speculative information flows"
    - "spectre attacks exploiting speculative execution"
    - "you shall not bypass employing data dependencies to prevent bounds check bypass"
    - "a systematic evaluation of transient execution attacks and defenses"

Connected through hyperedge HE-5 (induced by source paper "a systematic evaluation of transient execution attacks and defenses"):
  with members:
    - "smotherspectre exploiting speculative execution through port contention"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "safespec banishing the spectre of a meltdown with leakage free speculation"
    - "spectector principled detection of speculative information flows"
    - "spectre attacks exploiting speculative execution"
    - "you shall not bypass employing data dependencies to prevent bounds check bypass"

Connected through hyperedge HE-6 (induced by source paper "spectector principled detection of speculative information flows"):
  with members:
    - "spectre is here to stay an analysis of side channels and speculative execution"
    - "sgxpectre stealing intel secrets from sgx enclaves via speculative execution"
    - "netspectre read arbitrary memory over network"
    - "meltdownprime and spectreprime automatically synthesized attacks exploiting invalidation based coherence protocols"
    - "spectre attacks exploiting speculative execution"
    - "you shall not bypass employing data dependencies to prevent bounds check bypass"
    - "spectre returns speculation attacks using the return stack buffer"
    - "ret2spec speculative execution using return stack buffers"

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)