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: "can t touch this practical and generic software only defenses against rowhammer attacks"
  Abstract: Rowhammer is a hardware bug that can be exploited to implement privilege escalation and remote code execution attacks. Previous proposals on rowhammer mitigation either require hardware changes or follow heuristic-based approaches (based on CPU performance counters). To date, there exists no instant protection against rowhammer attacks on legacy systems. #R##N#In this paper, we present the design and implementation of two practical and efficient software-only defenses against rowhammer attacks. Our defenses prevent the attacker from leveraging rowhammer to corrupt physically co-located data in memory that is owned by a different system entity. Our first defense, B-CATT, extends the system bootloader to disable vulnerable physical memory. B-CATT is highly practical, does not require changes to the operating system, and can be deployed on virtually all x86-based systems. While B-CATT is able to stop all known rowhammer attacks, it does not yet tackle the fundamental problem of missing memory isolation in physical memory. To address this problem, we introduce our second defense G-CATT, a generic solution that extends the physical memory allocator of the OS to physically isolate the memory of different system entities (e.g., kernel and user space). #R##N#As proof of concept, we implemented B-CATT on x86, and our generic defense, G-CATT, on x86 and ARM to mitigate rowhammer-based kernel exploits. Our extensive evaluation shows that both mitigation schemes (i) can stop available real- world rowhammer attacks, (ii) impose virtually no run-time overhead for common user and kernel benchmarks as well as commonly used applications, and (iii) do not affect the stability of the overall system.

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"
    - "rowhammer js a remote software induced fault attack in javascript"
    - "drama exploiting dram addressing for cross cpu attacks"

Connected through hyperedge HE-2 (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-3 (induced by source paper "large scale studies of memory storage and network failures in a modern data center"):
  with members:
    - "architectural techniques for improving nand flash memory reliability"
    - "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"
    - "what your dram power models are not telling you lessons from a detailed experimental study"
    - "banshee bandwidth efficient dram caching via software hardware cooperation"
    - "another flip in the wall of rowhammer defenses"
    - "the rowhammer problem and other issues we may face as memory becomes denser"

Connected through hyperedge HE-4 (induced by source paper "rowhammer and beyond"):
  with members:
    - "improving 3d nand flash memory lifetime by tolerating early retention loss and process variation"
    - "spectre attacks exploiting speculative execution"
    - "d range using commodity dram devices to generate true random numbers with low latency and high throughput"
    - "nethammer inducing rowhammer faults through network requests"
    - "another flip in the wall of rowhammer defenses"
    - "errors in flash memory based solid state drives analysis mitigation and recovery"
    - "the rowhammer problem and other issues we may face as memory becomes denser"
    - "error characterization mitigation and recovery in flash memory based solid state drives"

Connected through hyperedge HE-5 (induced by source paper "cattmew defeating software only physical kernel isolation"):
  with members:
    - "nethammer inducing rowhammer faults through network requests"
    - "another flip in the wall of rowhammer defenses"
    - "malware guard extension using sgx to conceal cache attacks"
    - "rowhammer js a remote software induced fault attack in javascript"
    - "drama exploiting dram addressing for cross cpu attacks"

Connected through hyperedge HE-6 (induced by source paper "still hammerable and exploitable on the effectiveness of software only physical kernel isolation"):
  with members:
    - "nethammer inducing rowhammer faults through network requests"
    - "another flip in the wall of rowhammer defenses"
    - "malware guard extension using sgx to conceal cache attacks"
    - "rowhammer js a remote software induced fault attack in javascript"
    - "drama exploiting dram addressing for cross cpu attacks"

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)