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: "non profit organizations need to address security for effective government contracting"
  Abstract: The need for information security within small to mid-size companies is increasing. The risks of information security breach, data loss, and disaster are growing. The impact of IT outages and issues on the company are unacceptable to any size business and their clients. There are many ways to address the security for IT departments. The need to address risks of attacks as well as disasters is important to the IT security policies and procedures. The IT departments of small to medium companies have to address these security concerns within their budgets and other limited resources.Security planning, design, and employee training that is needed requires input and agreement from all levels of the company and management. This paper will discuss security needs and methods to implement them into a corporate infrastructure.

Connected through hyperedge HE-1 (induced by source paper "complete network security protection for sme s within limited resources"):
  with members:
    - "video surveillance in the cloud"
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"
    - "an overview of the security concerns in enterprise cloud computing"

Connected through hyperedge HE-2 (induced by source paper "exploring historical and emerging phishing techniques and mitigating the associated security risks"):
  with members:
    - "it security issues within the video game industry"
    - "an overview of the security concerns in enterprise cloud computing"

Connected through hyperedge HE-3 (induced by source paper "healthcare it is your information at risk"):
  with members:
    - "video surveillance in the cloud"
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"
    - "an overview of the security concerns in enterprise cloud computing"

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)