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: "armageddon cache attacks on mobile devices"
  Abstract: In the last 10 years, cache attacks on Intel x86 CPUs have gained increasing attention among the scientific community and powerful techniques to exploit cache side channels have been developed. However, modern smartphones use one or more multi-core ARM CPUs that have a different cache organization and instruction set than Intel x86 CPUs. So far, no cross-core cache attacks have been demonstrated on non-rooted Android smartphones. In this work, we demonstrate how to solve key challenges to perform the most powerful cross-core cache attacks Prime+Probe, Flush+Reload, Evict+Reload, and Flush+Flush on non-rooted ARM-based devices without any privileges. Based on our techniques, we demonstrate covert channels that outperform state-of-the-art covert channels on Android by several orders of magnitude. Moreover, we present attacks to monitor tap and swipe events as well as keystrokes, and even derive the lengths of words entered on the touchscreen. Eventually, we are the first to attack cryptographic primitives implemented in Java. Our attacks work across CPUs and can even monitor cache activity in the ARM TrustZone from the normal world. The techniques we present can be used to attack hundreds of millions of Android devices.

Connected through hyperedge HE-1 (induced by source paper "nowhere to hide cross modal identity leakage between biometrics and devices"):
  with members:
    - "autonomous learning for face recognition in the wild via ambient wireless cues"
    - "voxceleb2 deep speaker recognition"
    - "systematic classification of side channel attacks a case study for mobile devices"
    - "vggface2 a dataset for recognising faces across pose and age"
    - "trajectory recovery from ash user privacy is not preserved in aggregated mobility data"
    - "a study of mac address randomization in mobile devices and when it fails"
    - "facenet a unified embedding for face recognition and clustering"

Connected through hyperedge HE-2 (induced by source paper "store to leak forwarding leaking data on meltdown resistant cpus"):
  with members:
    - "practical enclave malware with intel sgx"
    - "smotherspectre exploiting speculative execution through port contention"
    - "page cache attacks"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "meltdownprime and spectreprime automatically synthesized attacks exploiting invalidation based coherence protocols"
    - "spectre attacks exploiting speculative execution"

Connected through hyperedge HE-3 (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-4 (induced by source paper "fortuneteller predicting microarchitectural attacks via unsupervised deep learning"):
  with members:
    - "fallout reading kernel writes from user space"
    - "zombieload cross privilege boundary data sampling"
    - "undermining user privacy on mobile devices using ai"
    - "tiresias predicting security events through deep learning"
    - "ret2spec speculative execution using return stack buffers"
    - "microwalk a framework for finding side channels in binaries"
    - "state of the art speech recognition with sequence to sequence models"
    - "generic black box end to end attack against state of the art api call based malware classifiers"

Connected through hyperedge HE-5 (induced by source paper "jackhammer efficient rowhammer on heterogeneous fpga cpu platforms"):
  with members:
    - "packet chasing spying on network packets over a cache side channel"
    - "fortuneteller predicting microarchitectural attacks via unsupervised deep learning"
    - "theory and practice of finding eviction sets"
    - "another flip in the wall of rowhammer defenses"
    - "cachezoom how sgx amplifies the power of cache attacks"
    - "perfweb how to violate web privacy with hardware performance events"
    - "autolock why cache attacks on arm are harder than you think"
    - "a software approach to defeating side channels in last level caches"

Connected through hyperedge HE-6 (induced by source paper "hybcache hybrid side channel resilient caches for trusted execution environments"):
  with members:
    - "speculative buffer overflows attacks and defenses"
    - "spectre attacks exploiting speculative execution"
    - "spectre returns speculation attacks using the return stack buffer"
    - "ret2spec speculative execution using return stack buffers"
    - "cachezoom how sgx amplifies the power of cache attacks"
    - "software grand exposure sgx cache attacks are practical"
    - "malware guard extension using sgx to conceal cache attacks"
    - "a software approach to defeating side channels in last level caches"

Connected through hyperedge HE-7 (induced by source paper "fallout reading kernel writes from user space"):
  with members:
    - "spectre is here to stay an analysis of side channels and speculative execution"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "spectre attacks exploiting speculative execution"
    - "spectre returns speculation attacks using the return stack buffer"
    - "ret2spec speculative execution using return stack buffers"
    - "a systematic evaluation of transient execution attacks and defenses"

Connected through hyperedge HE-8 (induced by source paper "spoiler speculative load hazards boost rowhammer and cache attacks"):
  with members:
    - "sgxpectre stealing intel secrets from sgx enclaves via speculative execution"
    - "ret2spec speculative execution using return stack buffers"
    - "a systematic evaluation of transient execution attacks and defenses"
    - "lazyfp leaking fpu register state using microarchitectural side channels"
    - "theory and practice of finding eviction sets"
    - "another flip in the wall of rowhammer defenses"
    - "cachezoom how sgx amplifies the power of cache attacks"
    - "rowhammer js a remote software induced fault attack in javascript"

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)