Security and congestion
Are my neighbors stealing my Wi-Fi?
A neighbor can consume your internet connection only if a device has joined your network. Separate neighboring Wi-Fi networks do not use your subscription, but they can compete for radio airtime.
What this symptom actually means
Two different problems are often described with the same phrase. Unknown devices inside your LAN suggest shared credentials or an identification mistake. Nearby access points on the same or overlapping spectrum can degrade Wi-Fi without ever joining your network.
What to check
- Review the router's connected-device list and identify your phones, televisions, cameras, consoles and randomized private MAC addresses.
- Change the Wi-Fi password if access is uncertain and use WPA2 or WPA3 with a strong unique passphrase.
- Disable obsolete security modes and WPS when it is not required.
- Inspect nearby networks by band and channel, but do not assume that the strongest neighbor belongs to a particular apartment.
- Compare performance near the router and over Ethernet before attributing every slowdown to radio congestion.
How Infrazoom can help
Infrazoom can show nearby Wi-Fi observations, channel context and LAN discovery evidence. It cannot identify which apartment owns a network or prove by itself that someone knows your password.
When to escalate
Use the router's administration interface for authoritative connected-client and access-control information. Treat channel analysis as troubleshooting evidence, not as a surveillance or attribution tool.
Infracheck provides diagnostic evidence and guidance. It cannot identify the owner of a nearby network, access your router administration account, or guarantee the cause of an intermittent provider fault from one scan.