# Does NetSenX protect us against quantum computers?

No, and no network monitoring product can. Protection against a future quantum computer comes from changing the cryptography in your own systems and in those of your suppliers: hybrid key exchange first, then post-quantum signatures. NetSenX is not an encryption product and does not change, upgrade or migrate anything. What it gives you is visibility, which is where every migration starts. NQCI, the NetSenX crypto inventory, is in preview: visible on every plan and active from the Pro plan. It shows which connections in monitored traffic still use quantum-vulnerable key exchange and which already use hybrid post-quantum key exchange, so you can see where updates have already done the work and where they have not, and spot regressions later. It needs the packet-capture sensor, which is off by default: switched on for a Linux agent, or a sensor on a SPAN or TAP port; the basic macOS mode does not see handshakes. It does not see cryptography inside applications, on disk or on segments that no sensor watches.

FAQ: [Post-quantum cryptography](https://netsenx.com/en/faq/pqc) · https://netsenx.com/en/faq/does-netsenx-protect-us-against-quantum-computers

## Read next

- https://netsenx.com/en/encrypted-traffic-analysis
- https://netsenx.com/en/features
- https://netsenx.com/en/blog/2026-10-27_harvest-now-decrypt-later

## Related questions

- [How do we answer an RFP question about post-quantum readiness?](https://netsenx.com/en/faq/how-to-answer-an-rfp-question-on-post-quantum-readiness)
- [What should we ask vendors about post-quantum readiness?](https://netsenx.com/en/faq/what-to-ask-vendors-about-post-quantum-readiness)
- [What is a quantum computer?](https://netsenx.com/en/faq/what-is-a-quantum-computer)
- [Why are quantum computers a threat to encryption?](https://netsenx.com/en/faq/why-are-quantum-computers-a-threat-to-encryption)
- [How does Shor's algorithm break RSA and ECC?](https://netsenx.com/en/faq/how-does-shors-algorithm-break-rsa-and-elliptic-curves)