No wireless

The default consumer posture is wireless everything — laptop on WiFi, phone on WiFi and Bluetooth, AirPods, smart speakers, smart TV, smart lights, the printer, the doorbell, the watch. Each of those is a small radio transmitter and receiver, on by default, listening by default, broadcasting by default. Under sustained targeting the default posture is wrong on two distinct mechanisms, and the defensive practice is to reverse it.

The two mechanisms are documented in detail on the tactics side. In short:

• Proximity wireless exploitation — active attacks against your WiFi and Bluetooth devices from within radio range. No network credentials required. Working from a long, continuing CVE history plus the protocol-level weaknesses (evil-twin, deauth) that work by design.
• WiFi sensing — passive observation that extracts presence, motion, gait, and respiration data from the radio reflections of your own router's signal. Dramatically more accurate when you are the one broadcasting from inside the space being observed.

Both surfaces shrink when the radios are off.

The sleeping target is the most vulnerable. A WiFi router or BT-enabled phone left active overnight produces continuous data for an observer for the eight hours the target is least able to monitor their environment. Phones do background syncing all night; WiFi devices do firmware checks, hand off to mesh nodes, beacon their presence. The richest period for passive surveillance and active exploitation is the period in which the target is unconscious.

The migration path.

• Networking. Use ethernet wherever it is physically possible. Most laptops, all desktops, most smart TVs, many routers have ethernet ports. Run cables. Ethernet is faster, more reliable, and electromagnetically silent in the WiFi band.
• Peripherals. Wired keyboard and mouse, wired headphones, wired printer connection. The audio quality is better. The latency is lower. The battery never dies. The radio is not there.
• Phones. Leave WiFi and Bluetooth off when you are not actively using a feature that requires them. Both toggles, both off, both verified after every system update — updates frequently re-enable them. When sleeping, airplane mode with Bluetooth-also-off.
• Smart home devices. Replace with dumb equivalents wherever possible. A box fan does the same work as a smart fan. A wall switch does the same work as a smart bulb. A non-IP camera does the same work as a smart doorbell.
• Routers. If you must run WiFi for guests or shared devices, run it on a separate VLAN from anything sensitive, on the lowest power setting that meets your coverage needs, and turn off the radio entirely overnight (most consumer routers have a schedule). The radio that is off cannot illuminate the room.

What you give up. This is a real cost. AirDrop becomes inconvenient. Wireless headphone freedom is gone. The smart-home automations stop working. Some workflows that depended on phone-laptop handoff break. The argument is not that wireless is bad — it is that under sustained targeting the cost-benefit reverses. For a population not under targeting, the convenience is worth the radio exposure. For a target, the convenience is the smallest item on the ledger and the radio exposure is one of the larger ones.

The principle generalizes. Every active radio in your environment is something an outside party can use to learn about, attack, or fingerprint you. The radio you have removed is the radio they cannot use.