Alcatel Lucent

Nokia Technologies Oy

Institut Telecom/telecom Bretagne

Wael Kanoun

Serge Papillon

Sylvain L'Haridon

Matteo Signorini

Samuel Dubus

Nora Cuppens

Frédéric Cuppens

Roberto DiPietro

Roberto Di Pietro

A method and system of authenticating a device within a network of connected devices that share a ledger of transactions between them under the form of exchanged blockchain messages and comprising: computing a PoK chain () based on the enhanced blockchain, receiving an authentication request from an application or a device, the authentication request including one or more PoKs (), retrieving from the PoK database the PoK chain () corresponding to the application or device identified in the authentication request; computing a PoK () based on the PoK chain () retrieved from the PoK database, comparing it with the PoK () included in the authentication request, and if they match, validating the authentication request.

Blockchain-based authentication method and system

Process for preserving the privacy of a user connected to a network through a terminal that comprises geolocation means adapted to emit geolocation information about the geographical position of said user, said process providing for: analyzing a packet from said terminal to detect the eventual presence of geolocation information into said packet; replacing in said packet said detected geolocation information by virtual geolocation information that have been computed for said user; forwarding through said network said packet with said virtual geolocation information.

Process for preserving the privacy of a user connected to a network

Process for preserving the privacy of a user connected to a network through a terminal that comprises geolocation means adapted to emit geolocation information () about the geographical position of said user, said process providing for: &#x2014;analyzing a packet () from said terminal to detect the eventual presence of geolocation information () into said packet; &#x2014;replacing in said packet said detected geolocation information by virtual geolocation information () that have been computed for said user; &#x2014;forwarding through said network said packet with said virtual geolocation information.

The present invention refers to a method for adapting security policies of an information system infrastructure as a function of attacks on the system by storing potential attacks, their associated risks and curative security policies in a data repository, monitoring entering contents representing data streams of the information system, detecting at least one attack in the information system, assessing a success probability parameter of the at least one detected attack and its associated cost impact parameter, assessing an activation impact parameter of at least one curative security policy in response to the at least one detected attack and its associated cost impact parameter, deciding to activate or deactivate a curative security policy based on the success probability parameter of a detected attack, the activation impact parameter of associated curative security policies and the cost impact parameters of both an attack and associated curative security policies.

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Nozay, France

Wael Kanoun