# What is breach and attack simulation, and does a mid-sized company need it?

Breach and attack simulation (BAS) is software that safely imitates attacker behaviour on your network so you can check whether your security tools notice it. Instead of waiting for a real attack or a yearly penetration test, it runs controlled scenarios, such as a scan, a call-out to a test server or a simulated data transfer, and records which ones your tools detected. A mid-sized company benefits most when it must show auditors or customers that detection works, not only that it is installed, or after changing its network or tools. If you have no detection tool yet, buy detection first: a simulation that nobody detects proves only that. A penetration test by people still finds things BAS does not, such as weak passwords or misconfigurations. NetSenX includes breach and attack simulation from the Business plan, so you can test its own detections.

FAQ: [NDR, EDR, SIEM, XDR, MDR](https://netsenx.com/en/faq/tools) · https://netsenx.com/en/faq/what-is-breach-and-attack-simulation

## Read next

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

## Related questions

- [How often should we test our detection with simulated attacks?](https://netsenx.com/en/faq/how-often-should-we-test-detection-with-simulated-attacks)
- [What is NDR (Network Detection and Response)?](https://netsenx.com/en/faq/what-is-ndr-network-detection-and-response)
- [What does NDR stand for?](https://netsenx.com/en/faq/what-does-ndr-stand-for)
- [How does network detection and response work?](https://netsenx.com/en/faq/how-does-network-detection-and-response-work)
- [What is the difference between NDR, EDR and SIEM?](https://netsenx.com/en/faq/what-is-the-difference-between-ndr-edr-and-siem)