Contact Tracing in Post-Covid World by Pranab Chakraborty & Subhamoy Maitra & Mridul Nandi & Suprita Talnikar

Author:Pranab Chakraborty & Subhamoy Maitra & Mridul Nandi & Suprita Talnikar
Language: eng
Format: epub
ISBN: 9789811597275
Publisher: Springer Singapore

Inverse-Sybil attack: Since the system does not verify the actual device or SIM card number to authenticate the messages between the app and the server, the inverse-Sybil attack is feasible in ROBERT but not in DESIRE (due to symmetric nature of the contact events being recorded through PET tokens).

Coercion threats: For ROBERT, the data stored in a device based on the exchange of HELLO messages are not decipherable without the help of the server, hence the chance of coercion threats in these systems is limited. However, there could still be a chance of an infected person’s device being misused by a malicious third party (before he/she uploads the proximity data to the server) by deliberately bringing that device in proximity to a large number of people and thereby triggering many false alarms as those users may get notified to be at-risk by the server once the data gets uploaded. The latter issue is applicable to DESIRE as well.

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