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 "mobile phone forensics an investigative framework based on user impulsivity and secure collaboration errors"):
  Abstract: This paper uses a scenario-based role-play experiment based on the usage of QR codes to detect how mobile users respond to social engineering attacks conducted via mobile devices. The results of this experiment outline a guided mobile phone forensics investigation method which could facilitate the work of digital forensics investigators while analysing the data from mobile devices. The behavioural response of users could be impacted by several aspects, such as impulsivity, smartphone usage and security or simply awareness that QR codes could contain malware. The findings indicate that the impulsivity of users is one of the key areas that determine the common mistakes of mobile device users. As a result, an investigative framework for mobile phone forensics is proposed based on the impulsivity and common mistakes of mobile device users. As a result, an investigative framework for mobile phone forensics is proposed based on the impulsivity and common mistakes of mobile device users. It could help the forensics investigators by potentially shortening the time spent on investigation of possible breach scenarios.

Includes members:
  Member "windows instant messaging app forensics facebook and skype as case studies":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "greening cloud enabled big data storage forensics syncany as a case study")
  Member "a forensically sound adversary model for mobile devices":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "greening cloud enabled big data storage forensics syncany as a case study")

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)