A Quantum Safe VPN is a virtual private network that utilizes quantum-resistant cryptographic algorithms to secure data in transit, ensuring its confidentiality and integrity even against attacks from a future quantum computer. Traditional VPNs rely on RSA or ECC for key exchange, which are vulnerable to Shor’s algorithm. A quantum-safe VPN replaces these vulnerable components with standardized PQC algorithms, such as CRYSTALS-Kyber for key encapsulation, creating a secure tunnel that is designed to withstand quantum decryption attempts. Cystel’s implementation of Quantum-Safe VPNs extends this critical protection to both your IT and OT environments, safeguarding remote access, site-to-site communications, and sensitive industrial data flows.