Balancing Usability and Security: A Zero-Touch Authentication Framework for Tiered Risk Actions

The article discusses the development and justification of a Zero-Touch framework for multi-level authentication, which provides a dynamic balance between user convenience and security reliability when performing operations of varying risk levels. The relevance of the study is determined by the need to minimize user friction without reducing the level of protection, which requires new models of adaptive authentication. The paper aims to develop and methodologically substantiate a Zero-Touch framework that automatically strengthens authentication checks only when risk increases, relying on session context (behavioral, network, and hardware parameters) and the regulatory requirements of NIST SP 800-63B, PSD2, and GDPR. This approach eliminates unnecessary steps for low-risk operations and ensures a reliable escalation process for critical actions. The novelty of the proposed approach lies in the integration of four asynchronous layers (risk assessment engine, Policy Decision Point, user journey orchestrator, and log analytics) with a three-level risk gradation, aligned with AAL1–AAL3. The innovative architecture ensures a seamless user experience, invisible blocking of suspicious requests, and selective strengthening of factors for only a fraction of operations, which fundamentally differs from the static schemes of traditional MFA. Results of piloting the Zero-Touch framework were a jump in authentication accuracy to 86% with only 12% false positives, a System Usability Scale rating well above 80 points, plus five percentage points added to critical transaction conversion, and reduction of incident response time to minutes while maintaining validation delays at 5–7 seconds even when it has to be escalated. This article is intended for researchers and developers of information security systems, digital service architects, and compliance specialists