# If one device on our network is hacked, are the others at risk?

Often, yes. An attacker who controls one machine uses it to look around and move on: scanning for other hosts, trying the passwords stored on the first machine and connecting over administration protocols such as SMB, RDP or SSH. On a flat network, where every computer can reach every server, nothing slows this down. Three free measures limit how far they get: segment the network so that workstations cannot reach servers they do not need, take local administrator rights away from everyday accounts, and use a different password for every system. NetSenX flags the scanning and the new host-to-host sessions this movement creates, on every plan, Free included. It does not see what the attacker does inside the first machine before anything touches the network.

FAQ: [Have I been hacked?](https://netsenx.com/en/faq/signs) · https://netsenx.com/en/faq/if-one-device-is-hacked-are-the-others-at-risk

## Read next

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

## Related questions

- [Is slow internet a sign that we have been hacked?](https://netsenx.com/en/faq/is-slow-internet-a-sign-of-a-hack)
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