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: "stack overflow considered harmful the impact of copy paste on android application security"
  Abstract: Online programming discussion platforms such as Stack Overflow serve as a rich source of information for software developers. Available information include vibrant discussions and oftentimes ready-to-use code snippets. Anecdotes report that software developers copy and paste code snippets from those information sources for convenience reasons. Such behavior results in a constant flow of community-provided code snippets into production software. To date, the impact of this behaviour on code security is unknown. We answer this highly important question by quantifying the proliferation of security-related code snippets from Stack Overflow in Android applications available on Google Play. Access to the rich source of information available on Stack Overflow including ready-to-use code snippets provides huge benefits for software developers. However, when it comes to code security there are some caveats to bear in mind: Due to the complex nature of code security, it is very difficult to provide ready-to-use and secure solutions for every problem. Hence, integrating a security-related code snippet from Stack Overflow into production software requires caution and expertise. Unsurprisingly, we observed insecure code snippets being copied into Android applications millions of users install from Google Play every day. To quantitatively evaluate the extent of this observation, we scanned Stack Overflow for code snippets and evaluated their security score using a stochastic gradient descent classifier. In order to identify code reuse in Android applications, we applied state-of-the-art static analysis. Our results are alarming: 15.4% of the 1.3 million Android applications we analyzed, contained security-related code snippets from Stack Overflow. Out of these 97.9% contain at least one insecure code snippet.

Connected through hyperedge HE-1 (induced by source paper "code duplication on stack overflow"):
  with members:
    - "usage and attribution of stack overflow code snippets in github projects"
    - "stack overflow a code laundering platform"
    - "stack overflow in github any snippets there"
    - "attribution required stack overflow code snippets in github projects"
    - "from query to usable code an analysis of stack overflow code snippets"

Connected through hyperedge HE-2 (induced by source paper "cryptoexplorer an interactive web platform supporting secure use of cryptography apis"):
  with members:
    - "the impact of developer experience in using java cryptography"

Connected through hyperedge HE-3 (induced by source paper "an empirical study of c vulnerabilities in crowd sourced code examples"):
  with members:
    - "toxic code snippets on stack overflow"
    - "how reliable is the crowdsourced knowledge of security implementation"
    - "oreo detection of clones in the twilight zone"
    - "sotorrent reconstructing and analyzing the evolution of stack overflow posts"
    - "gistable evaluating the executability of python code snippets on github"
    - "sotorrent studying the origin evolution and usage of stack overflow code snippets"
    - "secure coding practices in java challenges and vulnerabilities"
    - "leveraging flawed tutorials for seeding large scale web vulnerability discovery"

Connected through hyperedge HE-4 (induced by source paper "toxic code snippets on stack overflow"):
  with members:
    - "usage and attribution of stack overflow code snippets in github projects"
    - "stack overflow a code laundering platform"
    - "stack overflow in github any snippets there"
    - "attribution required stack overflow code snippets in github projects"
    - "sourcerercc scaling code clone detection to big code"
    - "from query to usable code an analysis of stack overflow code snippets"

Connected through hyperedge HE-5 (induced by source paper "analyzing and supporting adaptation of online code examples"):
  with members:
    - "usage and attribution of stack overflow code snippets in github projects"
    - "stack overflow a code laundering platform"
    - "stack overflow in github any snippets there"
    - "sourcerercc scaling code clone detection to big code"
    - "from query to usable code an analysis of stack overflow code snippets"

Connected through hyperedge HE-6 (induced by source paper "a uk case study on cybersecurity education and accreditation"):
  with members:
    - "how reliable is the crowdsourced knowledge of security implementation"
    - "why do developers get password storage wrong a qualitative usability study"
    - "leveraging flawed tutorials for seeding large scale web vulnerability discovery"
    - "an analysis of introductory programming courses at uk universities"

Connected through hyperedge HE-7 (induced by source paper "how reliable is the crowdsourced knowledge of security implementation"):
  with members:
    - "secure coding practices in java challenges and vulnerabilities"
    - "stack overflow a code laundering platform"
    - "stack overflow in github any snippets there"

Connected through hyperedge HE-8 (induced by source paper "usage and attribution of stack overflow code snippets in github projects"):
  with members:
    - "sotorrent reconstructing and analyzing the evolution of stack overflow posts"
    - "stack overflow a code laundering platform"
    - "stack overflow in github any snippets there"
    - "nlp2code code snippet content assist via natural language tasks"
    - "sourcerercc scaling code clone detection to big code"
    - "from query to usable code an analysis of stack overflow code snippets"

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)