Assessing Vulnerabilities in Voice Assistants: Comparative Analysis of Google Assistant, Siri, and Alexa
Aakanksha Aakanksha, Kashish Jain, Neha Giri, Anamika Gupta · Advances in Knowledge-Based Systems Data Science and Cybersecurity · 2025
Voice assistants (VAs), such as Google Assistant, SIRI, and Alexa, have changed the way people use technology by making information and services easily available. VAs provides assistance with web searches, smart home control, and scheduling tasks. VAs make daily tasks more convenient. Although there are many concerns regarding security, privacy, and general performance of the VAs as their use has increased over the period. The majority of research concentrates on their usability and functioning; little is known about their security vulnerabilities, which include threats to data privacy, background noise interference, and unauthorized voice access. This study assess the VAs security methods, response accuracy and authentication methods along with evaluating potential risks of data leakage and eavesdropping. Improving the security of voice interactions can be achieved by being aware of these security risks. Tests were conducted to determine how well these assistants authenticate users, limit access to sensitive data, and answer user inquiries to assess their security and performance. Tests were conducted with situations like illegal voice attempts, background noise interference, and voice history access. A comparative study was also conducted on the results generated by the test case. The findings of the study were that although all three assistants can successfully execute complicated requests, their security systems vary. Google Assistant is more vulnerable to background noise activation, unauthorized access, and voice history accessibility. SIRI offers the best security measure by imposing restrictions on the access to stored data and avoiding unauthorized activations. Alexa provides privacy and correct responses by striking a balance between security and dependability. These findings stresses on how crucial it is to protect user data by using better encryption practices, more strong access controls, and improved voice authentication systems. As VA continues to develop and become integral part in our daily life, these problems must be resolved to make them safer and more reliable.