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 "increasing security in cloud environment"):
  Abstract: The concept of cloud computing was introduced to meet the increase in demand for new application for a project, and to provide a large storage facility whenever or wherever a user needs it. The cloud system facility helped many industries as well as individual users to get authentic software at a very low cost. But with this new system comes the major concern of security, as the connection to the cloud is through the web and the data and application availability need to be handled for each client. The paper describes the various security measures that can be added in isolation or in combination for securing data transmission, server and client.

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 "detection and prevention of botnets and malware in an enterprise network":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "secure management of logs in internet of things")
  Member "a paxos based state machine replication system for anomaly detection":
    also connected through other hyperedges:
      (none)
  Member "a multi dimensional approach towards intrusion detection system":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "secure management of logs in internet of things")
  Member "a hybrid approach towards intrusion detection based on artificial immune system and soft computing":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "secure management of logs in internet of things")
  Member "a survey on security issues in cloud computing":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "securing cloud from cloud drain")
  Member "a new trusted and collaborative agent based approach for ensuring cloud security":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "a security framework for cloud data storage cds based on agent")
  Member "grid security and integration with minimal performance degradation":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "synchronous relaying of sensor data")

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)