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: "systematic classification of side channel attacks a case study for mobile devices"
  Abstract: Side-channel attacks on mobile devices have gained increasing attention since their introduction in 2007. While traditional side-channel attacks, such as power analysis attacks and electromagnetic analysis attacks, required physical presence of the attacker as well as expensive equipment, an (unprivileged) application is all it takes to exploit the leaking information on modern mobile devices. Given the vast amount of sensitive information that are stored on smartphones, the ramifications of side-channel attacks affect both the security and privacy of users and their devices. In this paper, we propose a new categorization system for side-channel attacks, which is necessary as side-channel attacks have evolved significantly since their scientific investigations during the smart card era in the 1990s. Our proposed classification system allows to analyze side-channel attacks systematically, and facilitates the development of novel countermeasures. Besides this new categorization system, the extensive survey of existing attacks and attack strategies provides valuable insights into the evolving field of side-channel attacks, especially when focusing on mobile devices. We conclude by discussing open issues and challenges in this context and outline possible future research directions.

Connected through hyperedge HE-1 (induced by source paper "taxonomy and challenges of out of band signal injection attacks and defenses"):
  with members:
    - "understanding the effectiveness of ultrasonic microphone jammer"
    - "a framework for evaluating security in the presence of signal injection attacks"
    - "trick or heat manipulating critical temperature based control systems using rectification attacks"
    - "spearphone a speech privacy exploit via accelerometer sensed reverberations from smartphone loudspeakers"
    - "oops had the silly thing in reverse optical injection attacks in through led status indicators"
    - "signal jamming attacks against communication based train control attack impact and countermeasure"
    - "injected and delivered fabricating implicit control over actuation systems by spoofing inertial sensors"
    - "dolphinattack inaudible voice commands"

Connected through hyperedge HE-2 (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"
    - "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"
    - "armageddon cache attacks on mobile devices"
    - "facenet a unified embedding for face recognition and clustering"

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 "a survey of electromagnetic side channel attacks and discussion on their case progressing potential for digital forensics"):
  with members:
    - "watch me but don t touch me contactless control flow monitoring via electromagnetic emanations"
    - "evaluation of digital forensic process models with respect to digital forensics as a service"
    - "current challenges and future research areas for digital forensic investigation"
    - "full duplex backscatter interference networks based on time hopping spread spectrum"

Connected through hyperedge HE-5 (induced by source paper "application inference using machine learning based side channel analysis"):
  with members:
    - "watch me but don t touch me contactless control flow monitoring via electromagnetic emanations"

Connected through hyperedge HE-6 (induced by source paper "making ethical decisions for the immersive web"):
  with members:
    - "predictive inequity in object detection"

Connected through hyperedge HE-7 (induced by source paper "authentication schemes for smart mobile devices threat models countermeasures and open research issues"):
  with members:
    - "active authentication on mobile devices via stylometry application usage web browsing and gps location"
    - "privacy preserving schemes for ad hoc social networks a survey"
    - "partial face detection for continuous authentication"
    - "hmog new behavioral biometric features for continuous authentication of smartphone users"
    - "touchin sightless two factor authentication on multi touch mobile devices"
    - "touchalytics on the applicability of touchscreen input as a behavioral biometric for continuous authentication"

Connected through hyperedge HE-8 (induced by source paper "sonarsnoop active acoustic side channel attacks"):
  with members:
    - "detecting cyber physical attacks in additive manufacturing using digital audio signing"
    - "don t skype type acoustic eavesdropping in voice over ip"

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)