# Can we check our company network for botnet infections for free?

Partly, yes. Several national bodies offer free services: in Spain, INCIBE's Antibotnet service checks whether your public IP address appears in reports of infected devices, and national CERTs in other countries pass similar reports on to the owners of affected networks; ask your internet provider whether it forwards them to you. Free checks on your side help too: your firewall's log of blocked outbound connections, DNS logs that show lookups of known malicious domains, and any device that calls the same outside server around the clock. A reputation check tells you that something behind your public address was reported, not which device it was. NetSenX flags command-and-control beaconing per host on every plan, Free included, which points to the device itself.

FAQ: [Have I been hacked?](https://netsenx.com/en/faq/signs) · https://netsenx.com/en/faq/can-we-check-for-botnet-infections-for-free

## Read next

- https://netsenx.com/en/is-someone-inside-your-network
- https://netsenx.com/en/detect-lateral-movement-c2-beaconing

## Related questions

- [What is a compromise assessment, and do we need one?](https://netsenx.com/en/faq/what-is-a-compromise-assessment)
- [A company in our sector was hacked. How do we check whether we are next?](https://netsenx.com/en/faq/a-company-in-our-sector-was-hacked-are-we-next)
- [What should we look for on our network after a partner or peer company is breached?](https://netsenx.com/en/faq/what-to-look-for-after-a-partner-company-is-breached)
- [We had an incident last year. How do we make sure we would detect it if it happened again?](https://netsenx.com/en/faq/how-to-detect-a-repeat-of-last-years-incident)
- [Why do companies so often learn about a breach from outsiders?](https://netsenx.com/en/faq/why-companies-learn-about-breaches-from-outsiders)