Le secret bancaire: l'entrée d'un principe au purgatoire

in Banque et Droit (2015), (160), 4-15

La montée angoissante du phénomène du blanchiment des capitaux et du financement du terrorisme conjuguée avec les implications persistantes de la crise des subprimes dans tous les pays développés qui ... [more ▼]

La montée angoissante du phénomène du blanchiment des capitaux et du financement du terrorisme conjuguée avec les implications persistantes de la crise des subprimes dans tous les pays développés qui continuent de faire face à l’assèchement de leurs recettes budgétaires dans un contexte de scandales à répétition d’évasion et de fraude fiscales, la nécessité de protéger les circuits bancaires utilisés pour parfaire toutes ces infractions de nature transfrontière s’est imposée. À la faveur de cette lutte justifiée par l’intérêt général de chaque État et même de la communauté internationale, le respect du secret bancaire jadis pilier essentiel de la solidité de tout système bancaire et principe sacré des oasis et paradis bancaires ou des places offshore est désormais entré au purgatoire. Le banquier doit désormais au mépris du secret bancaire, confesser sous forme de délation aux destinataires institués, les moindres suspicions qui pèsent sur son client à l’occasion de chaque opération de banque. [less ▲]

Secretion of the Phosphorylated Form of S100A9 from Neutrophils Is Essential for the Proinflammatory Functions of Extracellular S100A8/A9.

in Frontiers in immunology (2018), 9

S100A8 and S100A9 are members of the S100 family of cytoplasmic EF-hand Ca(2+)-binding proteins and are abundantly expressed in the cytosol of neutrophils. In addition to their intracellular roles, S100A8 ... [more ▼]

S100A8 and S100A9 are members of the S100 family of cytoplasmic EF-hand Ca(2+)-binding proteins and are abundantly expressed in the cytosol of neutrophils. In addition to their intracellular roles, S100A8/A9 can be secreted in the extracellular environment and are considered as alarmins able to amplify the inflammatory response. The intracellular activity of S100A8/A9 was shown to be regulated by S100A9 phosphorylation, but the importance of this phosphorylation on the extracellular activity of S100A8/A9 has not yet been extensively studied. Our work focuses on the impact of the phosphorylation state of secreted S100A9 on the proinflammatory function of neutrophils. In a first step, we characterized the secretion of S100A8/A9 in different stimulatory conditions and investigated the phosphorylation state of secreted S100A9. Our results on neutrophil-like differentiated HL-60 (dHL-60) cells and purified human neutrophils showed a time-dependent secretion of S100A8/A9 when induced by phorbol 12-myristoyl 13-acetate and this secreted S100A9 was found in a phosphorylated form. Second, we evaluated the impact of this phosphorylation on proinflammatory cytokine expression and secretion in dHL-60 cells. Time course experiments with purified unphosphorylated or phosphorylated S100A8/A9 were performed and the expression and secretion levels of interleukin (IL)-1alpha, IL-1beta, IL-6, tumor necrosis factor alpha, CCL2, CCL3, CCL4, and CXCL8 were measured by real-time PCR and cytometry bead array, respectively. Our results demonstrate that only the phosphorylated form of the complex induces proinflammatory cytokine expression and secretion. For the first time, we provide evidence that S100A8/PhosphoS100A9 is inducing cytokine secretion through toll-like receptor 4 signaling. [less ▲]

The Sectio Aurea in a Fugue by Darius Milhaud

Presentation (2000, July 17)

Secure and Distributed Assessment of Privacy-Preserving Releases of GWAS

in ACM/IFIP International Middleware Conference (2022, November)

Genome-wide association studies (GWAS) identify correlations between the genetic variants and an observable characteristic such as a disease. Previous works presented privacy-preserving distributed ... [more ▼]

Genome-wide association studies (GWAS) identify correlations between the genetic variants and an observable characteristic such as a disease. Previous works presented privacy-preserving distributed algorithms for a federation of genome data holders that spans multiple institutional and legislative domains to securely compute GWAS results. However, these algorithms have limited applicability, since they still require a centralized instance to decide whether GWAS results can be safely disclosed, which is in violation to privacy regulations, such as GDPR. In this work, we introduce GenDPR, a distributed middleware that leverages Trusted Execution Environments (TEEs) to securely determine a subset of the potential GWAS statistics that can be safely released. GenDPR achieves the same accuracy as centralized solutions, but requires transferring significantly less data because TEEs only exchange intermediary results but no genomes. Additionally, GenDPR can be configured to tolerate all-but-one honest-but-curious federation members colluding with the aim to expose genomes of correct members. [less ▲]

Secure Architecture for Clusters and Grids

in Proc. of the 2nd Int. Conf. on Critical Infrastructures (CRIS 2004) (2004)

Secure Auctions Without Cryptography

in 7th conference on Fun with Algorithms (FUN'14), Lipari Island, Sicily, Italy, July 1--3, 2014 (2014)

Secure backscatter-enabled NOMA system design in 6G era

in Internet Technology letters (2021)

The recent integration of backscatter communication (BC) with power-domain non-orthogonal multiple access (P-NOMA) has triggered significant research interest due to its applications in future sixth ... [more ▼]

The recent integration of backscatter communication (BC) with power-domain non-orthogonal multiple access (P-NOMA) has triggered significant research interest due to its applications in future sixth-generation (6G) wireless networks. However, the link security aspect of these networks has not been well investigated. This letter proposes a new optimization framework for improving the security of BC-enabled P-NOMA communication. Our system model takes into account the simultaneous operation of P-NOMA users and the backscatter tag (BT). Meanwhile, multiple non-colluding eavesdroppers (EDs) also try to target the signal of BT. Thus, the objective is to maximize the link security by finding the optimal reflection coefficient (RC) of the BT under the constraint of base station (BS) transmit power. Results demonstrate that the considered system with P-NOMA achieves high secrecy rate than the system using conventional orthogonal multiple access. [less ▲]

A Secure Data Sharing Scheme in Community Segmented Vehicular Social Networks for 6G

in IEEE Transactions on Industrial Informatics (2022)

The use of aerial base stations, AI cloud, and satellite storage can help manage location, traffic, and specific application-based services for vehicular social networks. However, sharing of such data ... [more ▼]

The use of aerial base stations, AI cloud, and satellite storage can help manage location, traffic, and specific application-based services for vehicular social networks. However, sharing of such data makes the vehicular network vulnerable to data and privacy leakage. In this regard, this article proposes an efficient and secure data sharing scheme using community segmentation and a blockchain-based framework for vehicular social networks. The proposed work considers similarity matrices that employ the dynamics of structural similarity, modularity matrix, and data compatibility. These similarity matrices are then passed through stacked autoencoders that are trained to extract encoded embedding. A density-based clustering approach is then employed to find the community segments from the information distances between the encoded embeddings. A blockchain network based on the Hyperledger Fabric platform is also adopted to ensure data sharing security. Extensive experiments have been carried out to evaluate the proposed data-sharing framework in terms of the sum of squared error, sharing degree, time cost, computational complexity, throughput, and CPU utilization for proving its efficacy and applicability. The results show that the CSB framework achieves a higher degree of SD, lower computational complexity, and higher throughput. [less ▲]

A Secure Exam Protocol Without Trusted Parties

in ICT Systems Security and Privacy Protection. 30th IFIP TC 11 International Conference, SEC 2015, Hamburg, Germany, May 26-28, 2015 (2015)

Secure M-PSK Communication via Directional Modulation

in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (2016, March)

In this work, a directional modulation-based technique is devised to enhance the security of a multi-antenna wireless communication system employing M-PSK modulation to convey information. The directional ... [more ▼]

In this work, a directional modulation-based technique is devised to enhance the security of a multi-antenna wireless communication system employing M-PSK modulation to convey information. The directional modulation method operates by steering the array beam in such a way that the phase of the received signal at the receiver matches that of the intended M-PSK symbol. Due to the difference between the channels of the legitimate receiver and the eavesdropper, the signals received by the eavesdropper generally encompass a phase component different than the actual symbols. As a result, the transceiver which employs directional modulation can impose a high symbol error rate on the eavesdropper without requiring to know the eavesdropper's channel. The optimal directional modulation beamformer is designed to minimize the consumed power subject to satisfying a specific resulting phase and minimal signal amplitude at each antenna of the legitimate receiver. The simulation results show that the directional modulation results in a much higher symbol error rate at the eavesdropper compared to the conventional benchmark scheme, i.e., zero-forcing precoding at the transmitter. [less ▲]