# Do I need a SIEM if I have NDR?

Not necessarily: many small and mid-sized companies get more from NDR plus good endpoint protection than from a SIEM nobody has time to tune. A SIEM (security information and event management) collects and correlates logs from many systems: firewalls, servers, directories, cloud services. It is powerful when someone writes and maintains its searches, and heavy when nobody does. NDR (network detection and response) gives detections from network traffic without log engineering. The two answer different questions: the SIEM tells you who logged in where, NDR tells you what the devices did on the network. You may need a SIEM anyway if an auditor, a customer contract or a regulator expects central log retention, or once you have staff to use it. If you already run one, NDR alerts can feed it: NetSenX has SIEM export from the Business plan, so network detections arrive in the SIEM already explained.

FAQ: [NDR, EDR, SIEM, XDR, MDR](https://netsenx.com/en/faq/tools) · https://netsenx.com/en/faq/do-i-need-a-siem-if-i-have-ndr

## Read next

- https://netsenx.com/en/what-is-ndr
- https://netsenx.com/en/blog/2026-09-24_ndr-vs-edr-vs-siem

## Related questions

- [Can network detection feed alerts into our existing SIEM?](https://netsenx.com/en/faq/can-network-detection-feed-alerts-into-our-siem)
- [How is NetSenX different from a signature-based IDS?](https://netsenx.com/en/faq/how-is-netsenx-different-from-a-signature-based-ids)
- [What is the difference between NDR and an IDS or IPS?](https://netsenx.com/en/faq/what-is-the-difference-between-ndr-and-an-ids-or-ips)
- [What is the difference between NDR and a firewall?](https://netsenx.com/en/faq/what-is-the-difference-between-ndr-and-a-firewall)
- [What is the difference between NDR, network traffic analysis and NetFlow monitoring?](https://netsenx.com/en/faq/ndr-vs-network-traffic-analysis-vs-netflow-monitoring)