human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "a report on personally identifiable sensor data from smartphone devices"):
  Abstract: An average smartphone is equipped with an abundance of sensors to provide a variety of vital functionalities and conveniences. The data from these sensors can be collected in order to find trends or discover interesting correlations in the data but can also be used by nefarious entities for the purpose of revealing the identity of the persons who generated this this http URL this paper, we seek to identify what types of sensor data can be collected on a smartphone and which of those types can pose a threat to user privacy by looking into the hardware capabilities of modern smartphone devices and how smartphone data is used in the literature. We then summarize some implications that this information could have on the GDPR.

Includes members:
  Member "predicting floor level for 911 calls with neural networks and smartphone sensor data":
    also connected through other hyperedges:
      (none)
  Member "mobile phone identification through the built in magnetometers":
    also connected through other hyperedges:
      (none)
  Member "planet photo geolocation with convolutional neural networks":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "mvp unified motion and visual self supervised learning for large scale robotic navigation")
  Member "seeing behind the camera identifying the authorship of a photograph":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "distance preserving grid layouts")
  Member "hmog new behavioral biometric features for continuous authentication of smartphone users":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "sensor based continuous authentication of smartphones users using behavioral biometrics a survey")
  Member "data driven authentication on the effectiveness of user behaviour modelling with mobile device sensors":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "sensor based continuous authentication of smartphones users using behavioral biometrics a survey")
  Member "pin skimming exploiting the ambient light sensor in mobile devices":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "secloak arm trustzone based mobile peripheral control")
  Member "mobile device identification via sensor fingerprinting":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "covert association of applications on edge devices by processor workload")

Question: Please tell me which class the source paper 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)