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: "drama exploiting dram addressing for cross cpu attacks"
  Abstract: In cloud computing environments, multiple tenants are often co-located on the same multi-processor system. Thus, preventing information leakage between tenants is crucial. While the hypervisor enforces software isolation, shared hardware, such as the CPU cache or memory bus, can leak sensitive information. For security reasons, shared memory between tenants is typically disabled. Furthermore, tenants often do not share a physical CPU. In this setting, cache attacks do not work and only a slow cross-CPU covert channel over the memory bus is known. In contrast, we demonstrate a high-speed covert channel as well as the first side-channel attack working across processors and without any shared memory. To build these attacks, we use the undocumented DRAM address mappings. #R##N#We present two methods to reverse engineer the mapping of memory addresses to DRAM channels, ranks, and banks. One uses physical probing of the memory bus, the other runs entirely in software and is fully automated. Using this mapping, we introduce DRAMA attacks, a novel class of attacks that exploit the DRAM row buffer that is shared, even in multi-processor systems. Thus, our attacks work in the most restrictive environments. First, we build a covert channel with a capacity of up to 2 Mbps, which is three to four orders of magnitude faster than memory-bus-based channels. Second, we build a side-channel template attack that can automatically locate and monitor memory accesses. Third, we show how using the DRAM mappings improves existing attacks and in particular enables practical Rowhammer attacks on DDR4.

Connected through hyperedge HE-1 (induced by source paper "are we susceptible to rowhammer an end to end methodology for cloud providers"):
  with members:
    - "rowhammer a retrospective"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "nethammer inducing rowhammer faults through network requests"
    - "pointing in the right direction securing memory accesses in a faulty world"
    - "another flip in the wall of rowhammer defenses"
    - "the rowhammer problem and other issues we may face as memory becomes denser"
    - "can t touch this practical and generic software only defenses against rowhammer attacks"
    - "rowhammer js a remote software induced fault attack in javascript"

Connected through hyperedge HE-2 (induced by source paper "ghostknight breaching data integrity via speculative execution"):
  with members:
    - "telehammer a stealthy cross boundary rowhammer technique"
    - "sgxpectre stealing intel secrets from sgx enclaves via speculative execution"
    - "netspectre read arbitrary memory over network"
    - "spectre attacks exploiting speculative execution"
    - "nethammer inducing rowhammer faults through network requests"
    - "spectre returns speculation attacks using the return stack buffer"
    - "ret2spec speculative execution using return stack buffers"
    - "a systematic evaluation of transient execution attacks and defenses"

Connected through hyperedge HE-3 (induced by source paper "covert association of applications on edge devices by processor workload"):
  with members:
    - "android inter app communication threats and detection techniques"
    - "bitwhisper covert signaling channel between air gapped computers using thermal manipulations"
    - "thermal covert channels on multi core platforms"
    - "mobile device identification via sensor fingerprinting"

Connected through hyperedge HE-4 (induced by source paper "telehammer cross privilege boundary rowhammer through implicit accesses"):
  with members:
    - "cattmew defeating software only physical kernel isolation"
    - "nethammer inducing rowhammer faults through network requests"
    - "another flip in the wall of rowhammer defenses"
    - "rowhammer js a remote software induced fault attack in javascript"

Connected through hyperedge HE-5 (induced by source paper "store to leak forwarding leaking data on meltdown resistant cpus"):
  with members:
    - "practical enclave malware with intel sgx"
    - "smotherspectre exploiting speculative execution through port contention"
    - "page cache attacks"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "meltdownprime and spectreprime automatically synthesized attacks exploiting invalidation based coherence protocols"
    - "spectre attacks exploiting speculative execution"

Connected through hyperedge HE-6 (induced by source paper "context leakage free transient execution"):
  with members:
    - "fallout reading kernel writes from user space"
    - "spectre is here to stay an analysis of side channels and speculative execution"
    - "store to leak forwarding leaking data on meltdown resistant cpus"
    - "zombieload cross privilege boundary data sampling"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "safespec banishing the spectre of a meltdown with leakage free speculation"
    - "meltdownprime and spectreprime automatically synthesized attacks exploiting invalidation based coherence protocols"

Connected through hyperedge HE-7 (induced by source paper "rowhammer a retrospective"):
  with members:
    - "processing data where it makes sense enabling in memory computation"
    - "rowhammer and beyond"
    - "improving 3d nand flash memory lifetime by tolerating early retention loss and process variation"
    - "d range using commodity dram devices to generate true random numbers with low latency and high throughput"
    - "nethammer inducing rowhammer faults through network requests"
    - "pointing in the right direction securing memory accesses in a faulty world"
    - "what your dram power models are not telling you lessons from a detailed experimental study"
    - "theory and practice of finding eviction sets"

Connected through hyperedge HE-8 (induced by source paper "zombieload cross privilege boundary data sampling"):
  with members:
    - "smotherspectre exploiting speculative execution through port contention"
    - "fallout reading kernel writes from user space"
    - "store to leak forwarding leaking data on meltdown resistant cpus"
    - "spoiler speculative load hazards boost rowhammer and cache attacks"
    - "speculative buffer overflows attacks and defenses"
    - "netspectre read arbitrary memory over network"
    - "spectector principled detection of speculative information flows"
    - "spectre attacks exploiting speculative execution"

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)