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CLUES: Collusive Theft of Conditional Generative Adversarial Networks
Simon Queyrut;Valerio Schiavoni;Lydia Y. Chen;Pascal Felber;Robert Birke
2024 43rd International Symposium on Reliable Distributed Systems (SRDS)
Year: 2024 | Conference Paper |
Conditional Generative Adversarial Networks (cGANs) are increasingly popular web-based synthesis services accessed through a query API, e.g., cGANs generate a cat image based on a “cat” query. However, cGAN-based synthesizers can be stolen via adversaries' queries, i.e., model thieves. The prevailing adversarial assumption is that thieves act independently: they query the deployed cGAN (i.e., the ...Show More
Evaluating the Potential of In-Memory Processing to Accelerate Homomorphic Encryption: Practical Experience Report
Mpoki Mwaisela;Joel Hari;Peterson Yuhala;Jämes Ménétrey;Pascal Felber;Valerio Schiavoni
2024 43rd International Symposium on Reliable Distributed Systems (SRDS)
Year: 2024 | Conference Paper |
The widespread adoption of cloud-based solutions introduces privacy and security concerns. Techniques such as homomorphic encryption (HE) mitigate this problem by allowing computation over encrypted data without the need for decryption. However, the high computational and memory overhead associated with the underlying cryptographic operations has hindered the practicality of HE-based solutions. Wh...Show More
On the Cost of Model-Serving Frameworks: An Experimental Evaluation
Pasquale De Rosa;Yérom-David Bromberg;Pascal Felber;Djob Mvondo;Valerio Schiavoni
2024 IEEE International Conference on Cloud Engineering (IC2E)
Year: 2024 | Conference Paper |
In machine learning (ML), the inference phase is the process of applying pre-trained models to new, unseen data with the objective of making predictions. During the inference phase, end-users interact with ML services to gain insights, recommendations, or actions based on the input data. For this reason, serving strategies are nowadays crucial for deploying and managing models in production enviro...Show More
A Comprehensive Trusted Runtime for WebAssembly With Intel SGX
Jämes Ménétrey;Marcelo Pasin;Pascal Felber;Valerio Schiavoni;Giovanni Mazzeo;Arne Hollum;Darshan Vaydia
In real-world scenarios, trusted execution environments (TEEs) frequently host applications that lack the trust of the infrastructure provider, as well as data owners who have specifically outsourced their data for remote processing. We present Twine, a trusted runtime for running WebAssembly-compiled applications within TEEs, establishing a two-way sandbox. Twine leverages memory safety guarantee...Show More
Using Educational Robotics to Support Active Learning Experiences and Foster Computational Thinking Skills among Non-STEM University Students
Vladimir Macko;Pascal Felber;Kristoffer Bergram;Adrian Holzer
2023 IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE)
Year: 2023 | Conference Paper |
During the last two decades educational robotics became a popular tool for teaching STEM concepts to audiences of all levels. Yet, its use for teaching programming with university-level non-STEM audiences has not been researched so far. This work presents a new educational activity designed for teaching programming to non-STEM university-level audiences. The key aspect is a separation of teaching ...Show More
Mitigating Adversarial Attacks in Federated Learning with Trusted Execution Environments
2023 IEEE 43rd International Conference on Distributed Computing Systems (ICDCS)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
The main premise of federated learning (FL) is that machine learning model updates are computed locally to preserve user data privacy. This approach avoids by design user data to ever leave the perimeter of their device. Once the updates aggregated, the model is broadcast to all nodes in the federation. However, without proper defenses, compromised nodes can probe the model inside their local memo...Show More
SGX Switchless Calls Made Configless
Peterson Yuhala;Michael Paper;Timothée Zerbib;Pascal Felber;Valerio Schiavoni;Alain Tchana
2023 53rd Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
Intel's software guard extensions (SGX) provide hardware enclaves to guarantee confidentiality and integrity for sensitive code and data. However, systems leveraging such security mechanisms must often pay high performance overheads. A major source of this overhead is SGX enclave transitions which induce expensive cross-enclave context switches. The Intel SGX SDK mitigates this with a switchless c...Show More
WaTZ: A Trusted WebAssembly Runtime Environment with Remote Attestation for TrustZone
Jämes Ménétrey;Marcelo Pasin;Pascal Felber;Valerio Schiavoni
2022 IEEE 42nd International Conference on Distributed Computing Systems (ICDCS)
Year: 2022 | Conference Paper |
Cited by: Papers (13)
WebAssembly (Wasm) is a novel low-level bytecode format that swiftly gained popularity for its efficiency, versatility and security, with near-native performance. Besides, trusted execution environments (TEEs) shield critical software assets against compromised infrastructures. However, TEEs do not guarantee the code to be trustworthy or that it was not tampered with. Instead, one relies on remote...Show More
Promoting Computational Thinking Skills in Non-Computer-Science Students: Gamifying Computational Notebooks to Increase Student Engagement
Alessio De Santo;Juan Carlos Farah;Marc Lafuente Martínez;Arielle Moro;Kristoffer Bergram;Aditya Kumar Purohit;Pascal Felber;Denis Gillet;Adrian Holzer
Computational thinking (CT) skills are becoming increasingly relevant for future professionals across all domains, beyond computer science (CS). As such, an increasing number of bachelor's and master's programs outside of the CS discipline integrate CT courses within their study program. At the same time, tools such as notebooks and interactive apps designed to support the teaching of programming ...Show More
VEDLIoT: Very Efficient Deep Learning in IoT
M. Kaiser;R. Griessl;N. Kucza;C. Haumann;L. Tigges;K. Mika;J. Hagemeyer;F. Porrmann;U. Rückert;M. vor dem Berge;S. Krupop;M. Porrmann;M. Tassemeier;P. Trancoso;F. Qararyah;S. Zouzoula;A. Casimiro;A. Bessani;J. Cecilio;S. Andersson;O. Brunnegard;O. Eriksson;R. Weiss;F. Mcierhöfer;H. Salomonsson;E. Malekzadeh;D. Ödman;A. Khurshid;P. Felber;M. Pasin;V. Schiavoni;J. Ménétrey;K. Gugala;P. Zierhoffer;E. Knauss;H. Heyn
2022 Design, Automation & Test in Europe Conference & Exhibition (DATE)
Year: 2022 | Conference Paper |
Cited by: Papers (5)
The VEDLIoT project targets the development of energy-efficient Deep Learning for distributed AIoT applications. A holistic approach is used to optimize algorithms while also dealing with safety and security challenges. The approach is based on a modular and scalable cognitive IoT hardware platform. Using modular microserver technology enables the user to configure the hardware to satisfy a wide r...Show More
VEDLIoT: Very Efficient Deep Learning in IoT
M. Kaiser;R. Griessl;N. Kucza;C. Haumann;L. Tigges;K. Mika;J. Hagemeyer;F. Porrmann;U. Rückert;M. vor dem Berge;S. Krupop;M. Porrmann;M. Tassemeier;P. Trancoso;F. Qararyah;S. Zouzoula;A. Casimiro;A. Bessani;J. Cecilio;S. Andersson;O. Brunnegard;O. Eriksson;R. Weiss;F. Mcierhöfer;H. Salomonsson;E. Malekzadeh;D. Ödman;A. Khurshid;P. Felber;M. Pasin;V. Schiavoni;J. Ménétrey;K. Gugala;P. Zierhoffer;E. Knauss;H. Heyn
Year: 2022 | Conference Paper |
Malware in the SGX Supply Chain: Be Careful When Signing Enclaves!
Vlad Crăciun;Pascal Felber;Andrei Mogage;Emanuel Onica;Rafael Pires
Malware attacks are a significant part of the new software security threats detected each year. Intel Software Guard Extensions (SGX) are a set of hardware instructions introduced by Intel in their recent lines of processors that are intended to provide a secure execution environment for user-developed applications. To our knowledge, there was no serious attempt yet to overcome the SGX protection ...Show More
MinervaFS: A User-Space File System for Generalised Deduplication: (Practical experience report)
Lars Nielsen;Dorian Burihabwa;Valerio Schiavoni;Pascal Felber;Daniel E. Lucani
2021 40th International Symposium on Reliable Distributed Systems (SRDS)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Deduplication exploits the presence of similar data chunks to reduce storage overhead. Generalised deduplication (GD) uses transformation functions to split data into a basis (common to millions of chunks) and a deviation with respect to the basis. Doing so, it avoids computing additional hashes, comparing or differentiating against previously stored chunks. Minervafs is the first FUSE-based file ...Show More
Scrooge Attack: Undervolting ARM Processors for Profit: Practical experience report
Christian Göttel;Konstantinos Parasyris;Osman Unsal;Pascal Felber;Marcelo Pasin;Valerio Schiavoni
2021 40th International Symposium on Reliable Distributed Systems (SRDS)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Latest ARM processors are approaching the computational power of x86 architectures while consuming much less energy. Consequently, supply follows demand with Amazon EC2, Equinix Metal and Microsoft Azure offering ARM-based instances, while Oracle Cloud Infrastructure is about to add such support. We expect this trend to continue, with an increasing number of cloud providers offering ARM-based clou...Show More
Plinius: Secure and Persistent Machine Learning Model Training
Peterson Yuhala;Pascal Felber;Valerio Schiavoni;Alain Tchana
2021 51st Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Year: 2021 | Conference Paper |
Cited by: Papers (6)
With the increasing popularity of cloud based machine learning (ML) techniques there comes a need for privacy and integrity guarantees for ML data. In addition, the significant scalability challenges faced by DRAM coupled with the high access-times of secondary storage represent a huge performance bottleneck for ML systems. While solutions exist to tackle the security aspect, performance remains a...Show More
ADAM-CS: Advanced Asynchronous Monotonic Counter Service
André Martin;Cong Lian;Franz Gregor;Robert Krahn;Valerio Schiavoni;Pascal Felber;Christof Fetzer
2021 51st Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Year: 2021 | Conference Paper |
Cited by: Papers (6)
Trusted execution environments (TEEs) offer the technological breakthrough to allow several applications to be deployed and executed over untrusted public cloud environments. Although TEEs (e. g., Intel SGX, ARM TrustZone, AMD SEV) provide several mechanisms to ensure confidentiality and integrity of data and code, they do not offer freshness out of the box, a critical aspect yet often overlooked,...Show More
NVCache: A Plug-and-Play NVMM-based I/O Booster for Legacy Systems
Rémi Dulong;Rafael Pires;Andreia Correia;Valerio Schiavoni;Pedro Ramalhete;Pascal Felber;Gaël Thomas
2021 51st Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Year: 2021 | Conference Paper |
Cited by: Papers (2)
This paper introduces NVCACHE, an approach that uses a non-volatile main memory (NVMM) as a write cache to improve the write performance of legacy applications. We compare NVCACHE against file systems tailored for NVMM (Ext4-DAX and NOVA) and with I/O-heavy applications (SQLite, RocksDB). Our evaluation shows that NVCACHE reaches the performance level of the existing state-of-the-art systems for N...Show More
Twine: An Embedded Trusted Runtime for WebAssembly
Jämes Ménétrey;Marcelo Pasin;Pascal Felber;Valerio Schiavoni
2021 IEEE 37th International Conference on Data Engineering (ICDE)
Year: 2021 | Conference Paper |
Cited by: Papers (32)
WebAssembly is an Increasingly popular lightweight binary instruction format, which can be efficiently embedded and sandboxed. Languages like C, C++, Rust, Go, and many others can be compiled into WebAssembly. This paper describes Twine, a WebAssembly trusted runtime designed to execute unmodified, language-independent applications. We leverage Intel SGX to build the runtime environment without de...Show More
TZ4Fabric: Executing Smart Contracts with ARM TrustZone : (Practical Experience Report)
Christina Müller;Marcus Brandenburger;Christian Cachin;Pascal Felber;Christian Göttel;Valerio Schiavoni
2020 International Symposium on Reliable Distributed Systems (SRDS)
Year: 2020 | Conference Paper |
Cited by: Papers (7)
Blockchain technology promises to revolutionize manufacturing industries. For example, several supply chain use cases may benefit from transparent asset tracking and automated processes using smart contracts. Several real-world deployments exist where the transparency aspect of a blockchain is both an advantage and a disadvantage at the same time. The exposure of assets and business interaction re...Show More
Trust Management as a Service: Enabling Trusted Execution in the Face of Byzantine Stakeholders
Franz Gregor;Wojciech Ozga;Sébastien Vaucher;Rafael Pires;Do Le Quoc;Sergei Arnautov;André Martin;Valerio Schiavoni;Pascal Felber;Christof Fetzer
2020 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)
Year: 2020 | Conference Paper |
Cited by: Papers (14)
Trust is arguably the most important challenge for critical services both deployed as well as accessed remotely over the network. These systems are exposed to a wide diversity of threats, ranging from bugs to exploits, active attacks, rogue operators, or simply careless administrators. To protect such applications, one needs to guarantee that they are properly configured and securely provisioned w...Show More
LEGaTO: Low-Energy, Secure, and Resilient Toolset for Heterogeneous Computing
B. Salami;K. Parasyris;A. Cristal;O. Unsal;X. Martorell;P. Carpenter;R. De La Cruz;L. Bautista;D. Jimenez;C. Alvarez;S. Nabavi;S. Madonar;M. Pericàs;P. Trancoso;M. Abduljabbar;J. Chen;P. N. Soomro;M Manivannan;M. Berge;S. Krupop;F. Klawonn;Al Mekhlafi;S. May;T. Becker;G. Gaydadjiev;H. Salomonsson;D. Dubhashi;O. Port;Y. Etsion;Le Quoc Do;Christof Fetzer;M. Kaiser;N. Kucza;J. Hagemeyer;R. Griessl;L. Tigges;K. Mika;A. Hüffmeier;M. Pasin;V. Schiavoni;I. Rocha;C. Göttel;P. Felber
2020 Design, Automation & Test in Europe Conference & Exhibition (DATE)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
The LEGaTO project leverages task-based programming models to provide a software ecosystem for Made in-Europe heterogeneous hardware composed of CPUs, GPUs, FPGAs and dataflow engines. The aim is to attain one order of magnitude energy savings from the edge to the converged cloud/HPC, balanced with the security and resilience challenges. LEGaTO is an ongoing three-year EU H2020 project started in ...Show More
LEGaTO: Low-Energy, Secure, and Resilient Toolset for Heterogeneous Computing
B. Salami;K. Parasyris;A. Cristal;O. Unsal;X. Martorell;P. Carpenter;R. De La Cruz;L. Bautista;D. Jimenez;C. Alvarez;S. Nabavi;S. Madonar;M. Pericàs;P. Trancoso;M. Abduljabbar;J. Chen;P. N. Soomro;M Manivannan;M. Berge;S. Krupop;F. Klawonn;Al Mekhlafi;S. May;T. Becker;G. Gaydadjiev;H. Salomonsson;D. Dubhashi;O. Port;Y. Etsion;Le Quoc Do;Christof Fetzer;M. Kaiser;N. Kucza;J. Hagemeyer;R. Griessl;L. Tigges;K. Mika;A. Hüffmeier;M. Pasin;V. Schiavoni;I. Rocha;C. Göttel;P. Felber
Year: 2020 | Conference Paper |
Anonymous and Confidential File Sharing over Untrusted Clouds
Stefan Contiu;Sébastien Vaucher;Rafael Pires;Marcelo Pasin;Pascal Felber;Laurent Réveillère
2019 38th Symposium on Reliable Distributed Systems (SRDS)
Year: 2019 | Conference Paper |
Using public cloud services for storing and sharing confidential data requires end users to cryptographically protect both the data and the access to the data. In some cases, the identity of end users needs to remain confidential against the cloud provider and fellow users accessing the data. As such, the underlying cryptographic access control mechanism needs to ensure the anonymity of both data ...Show More
Blockchain-Based Metadata Protection for Archival Systems
Arnaud L'Hutereau;Dorian Burihabwa;Pascal Felber;Hugues Mercier;Valerio Schiavoni
2019 38th Symposium on Reliable Distributed Systems (SRDS)
Year: 2019 | Conference Paper |
Long-term archival storage systems must protect data from powerful attackers that might try to corrupt or censor (part of) the documents. They must also protect the corresponding metadata information, which is essential to maintain and rebuild the stored data. In this practical experience report, we present metablock, a metadata protection system leveraging the Ethereum distributed ledger. We comb...Show More
ABEONA: An Architecture for Energy-Aware Task Migrations from the Edge to the Cloud
Isabelly Rocha;Gabriel Vinha;Andrey Brito;Pascal Felber;Marcelo Pasin;Valerio Schiavoni
2019 38th Symposium on Reliable Distributed Systems (SRDS)
Year: 2019 | Conference Paper |
This paper presents our preliminary results with ABEONA, an edge-to-cloud architecture that allows migrating tasks from low-energy, resource-constrained devices on the edge up to the cloud. Our preliminary results on artificial and real-world datasets show that it is possible to execute workloads in a more efficient manner energy-wise by scaling horizontally at the edge, without negatively affecti...Show More
Supply Chain Malware Targets SGX: Take Care of what you Sign
Andrei Mogage;Rafael Pires;Vlad Crăciun;Emanuel Onica;Pascal Felber
2019 38th Symposium on Reliable Distributed Systems (SRDS)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
Malware attacks represent a significant part of today's security threats. Software guard extensions (SGX) are a set of hardware instructions introduced by Intel in their recent lines of processors that are intended to provide a secure execution environment for user-developed applications. To our knowledge, there was no serious attempt yet to overcome the SGX protection by leveraging the software s...Show More
Network-Aware Container Scheduling in Multi-Tenant Data Center
Leonardo R. Rodrigues;Marcelo Pasin;Omir C. Alves;Charles C. Miers;Mauricio A. Pillon;Pascal Felber;Guilherme P. Koslovski
2019 IEEE Global Communications Conference (GLOBECOM)
Year: 2019 | Conference Paper |
Cited by: Papers (12)
Network management on multi-tenant container-based data center has critical impact on performance. Tenants encapsulate applications in containers abstracting away details on hosting infrastructures, and entrust data center management framework with the provisioning of network Quality-of-Service requirements. In this paper, we propose a network-aware multi-criteria container scheduler to jointly pr...Show More
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