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 "securing cloud from cloud drain"):
  Abstract: Today, in the world of communication, connected systems is growing at a rapid pace. To accommodate this growth the need for computational power and storage is also increasing at a similar rate. Companies are investing a large amount of resources in buying, maintaining and ensuring availability of the system to their customers. To mitigate these issues, cloud computing is playing a major role.The underlying concept of cloud computing dates back to the 50's but the term entering into widespread usage can be traced to 2006 when Amazon.com announced the Elastic Compute Cloud.In this paper, we will discuss about cloud security approaches. We have used the term Cloud-Drain to define data leakage in case of security compromise.

Includes members:
  Member "rism reputation based intrusion detection system for mobile ad hoc networks":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "secure management of logs in internet of things")
  Member "inter cloud data security strategies":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "secure management of logs in internet of things")
  Member "cloud computing an approach with modern cryptography":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "secure management of logs in internet of things")
  Member "survey on security issues in cloud computing and associated mitigation techniques":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "survey on security issues in file management in cloud computing environment")
  Member "a survey on security issues in cloud computing":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "increasing security in cloud environment")
  Member "a novel multipath approach to security in mobile ad hoc networks manets":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "iot enabled insurance ecosystem possibilities challenges and risks")
  Member "a new trusted and collaborative agent based approach for ensuring cloud security":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "a security framework for cloud data storage cds based on agent")

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)