Why Post-Quantum Cryptography Matters For Securing Campus And Branch Networks
Cisco, Wednesday, February 18th, 2026
As quantum computing rapidly advances, it presents a profound threat to the cryptographic foundations that currently secure our digital communications. This risk is particularly pronounced in the campus and branch networks that connect a vast array of today's users, IoT and OT devices, and applications across multiple, diverse locations
This extensive connectivity significantly expands the attack surface and increases network complexity, which makes security enforcement more challenging and heightens vulnerability to sophisticated threats, including those posed by quantum computing. Consequently, these environments require robust, quantum-resilient security measures to safeguard critical communications and data integrity.
For organizations like Cisco, ensuring the security of campus and branch networks against future quantum attacks is critical. This blog provides a gentle introduction to post-quantum cryptography (PQC), explaining why it matters and how it is shaping the future of network security.