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 bleeding digital heart identifying residual data generation from smartphone applications interacting with medical devices"):
  Abstract: The integration of medical devices in everyday life prompts the idea that these devices will increasingly have evidential value in civil and criminal proceedings. However, the investigation of these devices presents new challenges for the digital forensics community. Previous research has shown that mobile devices provide investigators with a wealth of information. Hence, mobile devices that are used within medical environments potentially provide an avenue for investigating and analyzing digital evidence from such devices. The research contribution of this paper is twofold. First, it provides an empirical analysis of the viability of using information from smartphone applications developed to complement a medical device, as digital evidence. Second, it includes documentation on the artifacts that are potentially useful in a digital forensics investigation of smartphone applications that interact with medical devices.

Includes members:
  Member "forensic taxonomy of popular android mhealth apps":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "forensics analysis of android mobile voip apps")
  Member "security incident response criteria a practitioner s perspective":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "how good is your data investigating the quality of data generated during security incident response investigations")
  Member "forensic analysis of whatsapp messenger on android smartphones":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "wsemail a retrospective on a system for secure internet messaging based on web services")
  Member "using smartphones as a proxy for forensic evidence contained in cloud storage services":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "investigating storage as a service cloud platform pcloud as a case study")
  Member "calm before the storm the challenges of cloud computing in digital forensics":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "emerging from the cloud a bibliometric analysis of cloud forensics studies")

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)