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 "discovering flaws in security focused static analysis tools for android using systematic mutation"):
  Abstract: Mobile application security has been one of the major areas of security research in the last decade. Numerous application analysis tools have been proposed in response to malicious, curious, or vulnerable apps. However, existing tools, and specifically, static analysis tools, trade soundness of the analysis for precision and performance, and are hence soundy. Unfortunately, the specific unsound choices or flaws in the design of these tools are often not known or well-documented, leading to a misplaced confidence among researchers, developers, and users. This paper proposes the Mutation-based soundness evaluation ($\mu$SE) framework, which systematically evaluates Android static analysis tools to discover, document, and fix, flaws, by leveraging the well-founded practice of mutation analysis. We implement $\mu$SE as a semi-automated framework, and apply it to a set of prominent Android static analysis tools that detect private data leaks in apps. As the result of an in-depth analysis of one of the major tools, we discover 13 undocumented flaws. More importantly, we discover that all 13 flaws propagate to tools that inherit the flawed tool. We successfully fix one of the flaws in cooperation with the tool developers. Our results motivate the urgent need for systematic discovery and documentation of unsound choices in soundy tools, and demonstrate the opportunities in leveraging mutation testing in achieving this goal.

Includes members:
  Member "horndroid practical and sound static analysis of android applications by smt solving":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "are free android app security analysis tools effective in detecting known vulnerabilities")
  Member "crashscope a practical tool for automated testing of android applications":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "assessing the quality of the steps to reproduce in bug reports")
  Member "enabling mutation testing for android apps":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "deepmutation a neural mutation tool")
  Member "automatically discovering reporting and reproducing android application crashes":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "assessing the quality of the steps to reproduce in bug reports")
  Member "adsplit separating smartphone advertising from applications":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "an empirical study of usages updates and risks of third party libraries in java projects")
  Member "quire lightweight provenance for smart phone operating systems":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "secloak arm trustzone based mobile peripheral control")

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)