The advent of quantum computing poses significant threats to classical cryptographic protocols, necessitating the adoption of quantum-resistant algorithms in critical communication platforms. This study presents a comparative analysis of quantum-resistant algorithms in mainstream video conferencing platforms, focusing on Zoom’s Kyber-based end-to-end encryption (E2EE) against Microsoft Teams, Webex, and other competitors. The analysis evaluates security levels, interoperability, and vulnerability to side-channel attacks, employing Latisse-based algorithm modeling to assess quantum-resistant performance. Results highlight Zoom’s proactive integration of post-quantum cryptography, while competitors exhibit limited or partial adoption, exposing potential security gaps in the post-quantum era. Findings provide a benchmark for assessing video conferencing security and guide future implementations of quantum-resilient communication protocols.