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1. (WO2018178035) OUT-OF-BAND CHALLENGE IN A COMPUTER SYSTEM

Pub. No.:    WO/2018/178035    International Application No.:    PCT/EP2018/057686
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Mar 27 01:59:59 CEST 2018
IPC: H04L 9/32
H04L 29/06
H04W 12/06
Applicants: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
Inventors: DANIEL, Joshua
DUCATEL, Gery
Title: OUT-OF-BAND CHALLENGE IN A COMPUTER SYSTEM
Abstract:
A computer implemented method for access control for a consumer accessing a restricted resource in a network connected computer system, the method comprising: receiving a continuous sequence of data records relating to use, by the consumer, of the restricted resource, the resource being accessed by the consumer over an access network; continuously comparing the data records with an access control policy for the restricted resource; in response to a determination that the behaviour is non-compliant with respect to the policy, generating and communicating a shared secret to the consumer, the shared secret being communicated via a communications channel other than the access network; receiving a response to a challenge from the user via the access network; and notifying the computer system that access to the resource by the consumer should be precluded based on a comparison of the response to the challenge and the shared-secret.