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 "analysing censorship circumvention with vpns via dns cache snooping"):
  Abstract: Anecdotal evidence suggests an increasing number of people are turning to VPN services for the properties of privacy, anonymity and free communication over the internet. Despite this, there is little research into what these services are actually being used for. We use DNS cache snooping to determine what domains people are accessing through VPNs. This technique is used to discover whether certain queries have been made against a particular DNS server. Some VPNs operate their own DNS servers, ensuring that any cached queries were made by users of the VPN. We explore 3 methods of DNS cache snooping and briefly discuss their strengths and limitations. Using the most reliable of the methods, we perform a DNS cache snooping scan against the DNS servers of several major VPN providers. With this we discover which domains are actually accessed through VPNs. We run this technique against popular domains, as well as those known to be censored in certain countries; China, Indonesia, Iran, and Turkey. Our work gives a glimpse into what users use VPNs for, and provides a technique for discovering the frequency with which domain records are accessed on a DNS server.

Includes members:
  Member "a long way to the top significance structure and stability of internet top lists":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "must should don t care tcp conformance in the wild")
  Member "automated discovery of internet censorship by web crawling":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "automatically generating a large culture specific blocklist for china")
  Member "filteredweb a framework for the automated search based discovery of blocked urls":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "iclab a global longitudinal internet censorship measurement platform")
  Member "the effect of dns on tor s anonymity":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "measuring information leakage in website fingerprinting attacks and defenses")
  Member "spoiled onions exposing malicious tor exit relays":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "shedding light on the dark corners of the internet a survey of tor research")
  Member "the anatomy of web censorship in pakistan":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "iclab a global longitudinal internet censorship measurement platform")

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)