3 min read · Beginner · Related: Wireless Design & Implementation

Updated October 2026 · Tampa Bay–tested steps

See Every Device on Your Wi-Fi (Find the Freeloaders)

Unknown 'Android-7' eating bandwidth? Router client lists, Fing scans, and kicking off intruders.

  1. 1. Check the router's client list

    Log into the router → Connected Devices/DHCP list. Count them against your office's actual devices. Anything unrecognized gets investigated — screenshot the list first for MAC addresses.

  2. 2. Scan with Fing for the full picture

    Install Fing (free) on your phone and run a network scan. It names manufacturers (Amazon, Espressif, Apple), flags new joiners, and shows what your router's cryptic list hides.

  3. 3. Evict and rotate

    Change the Wi-Fi password (keep the SSID), enable WPA3/WPA2-AES, and reconnect only known devices. Then check: if the stranger returns, someone shared the password or WPS is on — disable WPS next.

See Every Device on Your Wi-Fi (Find the Freeloaders) — When to Call a Pro

  • Intruder returns after password rotation — possible WPS flaw or compromised device.
  • Business network with unknown clients — segmentation audit, immediately.
  • You need MAC allowlists and alerts for new joiners configured properly.
Get help with this(813) 702-3155

Guide FAQ

Tampa offices average 20–25 (phones, TVs, bulbs, plugs, watches). Count yours once — surprises are how intruders hide.
As a supplement, not the defense — MACs spoof in seconds. Strong WPA password plus guest isolation does the real work; filtering just tidies the list.
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