# Can NDR detect threats in encrypted traffic without decrypting it?

Yes, from metadata. Timing, volume, destinations and the TLS handshake stay visible when the content is encrypted, so beaconing to a command-and-control server and unusual data transfers can be detected without breaking encryption. What stays invisible is the content of the session.

FAQ: [Encryption and encrypted traffic](https://netsenx.com/en/faq/encryption) · https://netsenx.com/en/faq/can-ndr-detect-threats-in-encrypted-traffic-without-decrypting-it

## Read next

- https://netsenx.com/en/encrypted-traffic-analysis
- https://netsenx.com/en/what-is-ndr

## Related questions

- [What does NetSenX read from an encrypted connection?](https://netsenx.com/en/faq/what-does-netsenx-read-from-an-encrypted-connection)
- [Do I need TLS decryption to detect threats?](https://netsenx.com/en/faq/do-i-need-tls-decryption-to-detect-threats)
- [Why not decrypt TLS traffic for inspection?](https://netsenx.com/en/faq/why-not-decrypt-tls-traffic-for-inspection)
- [What does TLS inspection on a firewall break?](https://netsenx.com/en/faq/what-does-tls-inspection-on-a-firewall-break)
- [Can deep packet inspection work on encrypted traffic?](https://netsenx.com/en/faq/can-deep-packet-inspection-work-on-encrypted-traffic)