WHITE PAPER

As instant messaging becomes mission-critical for modern organizations, the security risks tied to these platforms have grown significantly. This paper explores how the rise of mobile, remote, and hybrid work has accelerated reliance on real-time messaging, while simultaneously expanding the attack surface through BYOD devices, identity-based threats, and increasingly sophisticated cyber adversaries. The emergence of quantum computing further escalates these risks, introducing the prospect of “harvest now, decrypt later” attacks and the eventual breakdown of traditional encryption once quantum-capable systems reach scale.

To address this challenge, Preparing for Quantum Attacks: Securing Critical Communications examines the transition to post-quantum cryptography (PQC) and the role of Messaging Layer Security (MLS) in enabling secure, scalable group communications. The paper outlines recent NIST PQC standards and explains why classical messaging architectures struggle with the size, performance, and agility demands of quantum-safe encryption. It then introduces the GLYPH Protocol, developed by SENTRIQS, which combines MLS and PQC in a crypto-efficient, crypto-agile, and modular architecture. Designed specifically for critical sector organizations, GLYPH delivers quantum-safe collaboration without sacrificing performance—providing a future-ready foundation for secure communications in the quantum era.