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: "propatrol attack investigation via extracted high level tasks"
  Abstract: Kernel audit logs are an invaluable source of information in the forensic investigation of a cyber-attack. However, the coarse granularity of dependency information in audit logs leads to the construction of huge attack graphs which contain false or inaccurate dependencies. To overcome this problem, we propose a system, called ProPatrol, which leverages the open compartmentalized design in families of enterprise applications used in security-sensitive contexts (e.g., browser, chat client, email client). To achieve its goal, ProPatrol infers a model for an application's high-level tasks as input-processing compartments using purely the audit log events generated by that application. The main benefit of this approach is that it does not rely on source code or binary instrumentation, but only on a preliminary and general knowledge of an application's architecture to bootstrap the analysis. Our experiments with enterprise-level attacks demonstrate that ProPatrol significantly cuts down the forensic investigation effort and quickly pinpoints the root- cause of attacks. ProPatrol incurs less than 2% runtime overhead on a commodity operating system.

Connected through hyperedge HE-1 (induced by source paper "poirot aligning attack behavior with kernel audit records for cyber threat hunting"):
  with members:
    - "runtime analysis of whole system provenance"
    - "holmes real time apt detection through correlation of suspicious information flows"
    - "sleuth real time attack scenario reconstruction from cots audit data"
    - "saql a stream based query system for real time abnormal system behavior detection"
    - "aiql enabling efficient attack investigation from system monitoring data"
    - "behavior query discovery in system generated temporal graphs"
    - "detection of early stage enterprise infection by mining large scale log data"
    - "efficient subgraph matching on billion node graphs"

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)