Quantum threats are now real as 2026 approaches. CTOs and CIOs overseeing network and IT infrastructure are at a turning point, and moving to post-quantum cryptography is becoming a necessity, not a choice. Here are five predictions to guide your planning.
The CRQC Race Accelerates
You can expect more vendors to announce Quantum Computer’s CRQC capabilities within the next 5 years. PSI Quantum’s major funding and Quantum’s recent breakthroughs show the industry is gaining momentum. There is still debate about the exact timelines. Infrastructure leaders should not assume they have 5 to 10 years to prepare. Heavy investments from cloud providers, defense contractors, and governments are speeding up the timeline.
Regulatory Mandates Emerge
In 2026, the first binding PQC compliance requirements will appear after NIST standardized quantum resistance algorithms in 2024. Regulators around the world began setting enforcement timelines. Financial services, healthcare, and critical infrastructure will need to create PQC migration plans, and government contractors will have the toughest deadlines. The key issue is not if you should migrate, but if you can show auditors and regulators a solid transition plan.
Hybrid Cryptographic Architectures Become Standard
Hopefully, quantum-resistant systems will still be uncommon in 2026. Most companies will use hybrid solutions that mix classic and post-quantum algorithms. This approach adds extra security and lets organizations keep using their current systems. Your networking teams should start looking at hardware and software that can easily switch between algorithms. Being able to change algorithms without re-designing your systems will be essential.
Supply Chain Visibility Becomes Critical
Harvest now, decrypt later threat means attackers are already saving encrypted data to break it in the future. In 2026, advanced attackers will focus more on supply chain partners with weaker security. CTOs should check not just their own systems but also those of vendors, contractors, and partners for PQC readiness. Third-party risk management should include clear quantum readiness standards, and vendor surveys must ask about PQC plans.
Performance Optimization Drives Innovation
Most quantum algorithms require more computing power, which may slow down networks and delay sensitive applications. In 2026, there will be significant improvements in hardware, algorithmic speed, and capabilities. Since replacing all systems will be too expensive for most organizations, they should look for solutions that protect network performance and avoid a complete overhaul.
The Time To Move Is Now
For infrastructure leaders, the move to quantum security brings both risks and opportunities. Companies that view PQC as merely a compliance task may face rushed, costly changes. Those who use it to modernize their infrastructure can create more flexible and future-ready operations.
Start by making your network (where all critical data moves) as secure as possible. List all the cryptographic tools your systems use and talk to your vendors about their PQC plans. Most importantly, get executive support and budget now before you run out of time for a careful migration and are forced into emergency fixes.
Source: Post-Quantum Cryptography in 2026: What Infrastructure Leaders Need to Know
