Continuous Behavioral Authentication via Multi-Expert BERT Log Analysis for Secure Data Sharing
Continuous authentication for mobile and zero-trust systems requires nonintrusive evidence confirming the enrolled user-device context remains valid after initial login. This paper presents a BERT log analysis framework for continuous behavioral authentication using Android system logs. The proposed pipeline parses logcat streams into event templates and dynamic variables, pre-trains a domain-adapted BERT encoder on Android log syntax, and fine-tunes three expert models for network/device identity, battery-transition timing, and Wi-Fi topology. The expert confidence scores are fused through a log-space transformation and a 5-nearest-neighbor distance classifier to generate a normality sco...
| Authors | Stergios Lantzos, Ilias Syrigos, Apostolos Apostolaras et al. |
|---|---|
| Primary category | cs.CR |
| Published | 20 June 2026 |
| Last updated at source | 20 August 2026 |
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