Telecommunications Traffic Data Security via Time Delay Intermediary
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Solution Overview
Problem
Existing methods for securing telecommunications traffic data do not adequately prevent the telecommunications service provider from deducing information on who communicates with whom, even when data exchange is encrypted, due to the temporal correlation between message receipt and notification sending.
Innovation Solution
Implementing a time delay between the receipt of a message and the sending of a notification, with the delay selected based on data traffic levels and potentially randomized, to break the temporal correlation and prevent assignment of notifications to messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the telecommunications service provider stores and processes message receipt and notification sending data, then the service can function properly, but the provider can deduce communication information between subscribers
Solution Approach 1:
A third-party service is introduced as an intermediary that receives encrypted messages from subscribers and forwards them to the intended recipients without the telecommunications service provider being able to access the content or metadata. This intermediary layer breaks the direct link between the provider and the communication data, preventing deduction of communication patterns while maintaining service functionality.
Solution Approach 2:
The communication data processing function is extracted from the telecommunications service provider's system and transferred to a separate third-party service. This extraction removes the provider's ability to observe message receipt and notification timing, thereby eliminating the information loss while preserving the core service operation.
2Reliability
If the telecommunications service provider monitors data traffic for security purposes, then unauthorized access can be detected, but communication patterns between subscribers become visible
Solution Approach 1:
The third-party service acts as a mediator that handles message routing and notification delivery without allowing the telecommunications service provider to monitor communication patterns. Security monitoring functions are maintained through the intermediary layer, which can detect unauthorized access attempts without exposing communication metadata to the provider.
Solution Approach 2:
The security monitoring function is segmented from the data traffic monitoring function. The telecommunications service provider retains the ability to monitor for security threats through the intermediary service, while the segmentation prevents observation of normal communication patterns between subscribers.
3Reliability
If the telecommunications service provider stores traffic data for legal compliance, then data retention requirements are met, but the provider can analyze who communicates with whom
Solution Approach 1:
The third-party service serves as an intermediary that stores traffic data required for legal compliance while preventing the telecommunications service provider from accessing communication metadata. The intermediary layer maintains the necessary data retention for legal purposes while blocking the provider's ability to analyze communication patterns.
Solution Approach 2:
The data storage function for legal compliance is extracted from the provider's system and implemented through the intermediary service. This extraction allows the provider to meet data retention requirements without gaining access to communication metadata, as the intermediary handles the storage separately.
Data Source
AI summary
A method is provided for securing telecommunications traffic data that are incurred with the telecommunications service provider of the telecommunications service when at least one telecommunications service is used by a number of subscribers is provided, wherein the telecommunications service is performed in a secure environment, the telecommunications service receives a message from at least one first subscriber of the telecommunications service, the message being intended for at least one second subscriber of the telecommunications service, and the telecommunications service, in response to the receipt of the message, sends a notification to the at least one second subscriber, wherein between the receipt of the message and the sending of the notification, a predetermined time delay is provided. Further, a system is provided for securing telecommunications traffic data is provided being adapted to execute the method according to the invention.