Wireless Sensing Security Through Deceptive-Feature Training

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Solution Overview

Problem

Existing wireless sensing technologies lack effective security measures to protect against illegitimate passive sensing by attackers, who can exploit legitimate sensing signals to gather unauthorized information, such as movements behind walls, without being detected.

Innovation Solution

A method for training machine learning models by introducing deceptive features into input instances, allowing the models to differentiate between legitimate and illegitimate sensing signals, thereby enhancing security in wireless sensing applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If sensing signals are transmitted for legitimate sensing applications, then sensing functionality is enabled, but illegitimate users can perform passive sensing and gather unauthorized information

Engineering Contradiction:
Improvesensing functionalityVSAvoidunauthorized passive sensing
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by training machine learning models with deceptive features before deployment. The models are pre-trained to recognize and reject signals containing deceptive features, which attackers might use for passive sensing. This proactive measure prevents unauthorized sensing by establishing defense mechanisms in advance, rather than reacting to attacks after they occur.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The patent converts the harmful effect of deceptive features into a beneficial security mechanism. By intentionally introducing deceptive features during training, the system learns to distinguish between legitimate and illegitimate signals. The deceptive features, which could potentially be exploited by attackers, are instead used to strengthen the model's ability to detect and reject unauthorized passive sensing attempts.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If machine learning models are trained with deceptive features, then security against illegitimate sensing is improved, but model complexity and training difficulty increase

Engineering Contradiction:
Improvesensing securityVSAvoidmodel training complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by preparing training datasets with deceptive features in advance. Instead of dealing with complex security challenges during deployment, the system pre-trains models with various deceptive scenarios. This preliminary preparation simplifies the deployment phase, as the models are already equipped to handle security threats without requiring real-time complex decision-making.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses copying by creating synthetic training datasets that replicate potential attack scenarios. Rather than requiring complex real-world attack data, the system generates copied versions of deceptive signals through data augmentation and simulation. This approach simplifies the training process by providing abundant, diverse training examples without the complexity of collecting and processing real attack data.

Inventive Principle:
Principle #26Copying

3Loss of information

If existing cryptography-based security methods are used, then data content is protected, but sensing signal integrity is not protected against passive sensing

Engineering Contradiction:
Improvedata content securityVSAvoidsensing signal security
Core Design Contradiction:
Loss of informationVSReliability

Solution Approach 1:

The patent applies mechanics substitution by replacing cryptography-based security mechanisms with machine learning-based signal analysis. Instead of relying on encryption to protect sensing signals, the system uses trained ML models to analyze signal characteristics and detect passive sensing attempts. This substitution shifts the security approach from protecting data content to protecting signal integrity through pattern recognition.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent applies parameter changes by transforming the security problem from data encryption to signal feature analysis. The system changes the parameters being protected from cryptographic keys and encrypted data to signal characteristics such as temporal patterns, spectral features, and spatial distributions. This parameter transformation enables the detection of passive sensing attempts through anomaly detection in signal parameters rather than through cryptographic verification.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4614354A1Sensing security in sensing and joint sensing applications
Publication Date: 2025.09.10 VESTEL ELEKTRONIK SANAYI & TICARET ANONIM SIRKETI
  • EP4614354A1 patent drawingFigure 1~2f
  • EP4614354A1 patent drawingFigure 3~4
  • EP4614354A1 patent drawingFigure 5~6

AI summary

Some embodiments in the present disclosure relate to improving security in sensing applications. In particular, a sensing system utilizing a ML model is provided. In a method for training the ML model, a first dataset comprising a plurality of first input instances and associated first output labels is obtained. Further, a second dataset comprising a plurality of second input instances and associated second output labels is obtained, wherein the second dataset is obtained, by selecting a subset of the plurality of first input instances and associated first output labels, generating the plurality of second input instances by introducing a deceptive feature into each of the subset of the first input instances, and setting the first output labels associated with the subset of the first input instances as the second output labels. The training method further comprised training a machine learning model using the second dataset.