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# Reducing the Threat Surface in Your Own Home
- URL: https://being-prepared.ghost.io/reducing-the-threat-surface-in-your-own-home/
- Published: 2026-11-02T15:50:30.000Z
- Updated: 2026-11-02T15:50:30.000Z
- Author: Robert Yonaitis

About two years ago I ripped out the smart-home automation in my house. Smart lights, connected thermostats, the whole setup. I can still turn lights on and set the temperature myself. It takes a few seconds. What it does *not* do is leave an open door for someone else to control those systems remotely.

That choice looks smarter every time we see real-world attacks on connected equipment.

This weekend and into today (November 2), a fresh wave of suspected cyberattacks hit supermarket refrigeration systems across Europe. Stores in Belgium, Luxembourg, Sweden, Ireland, Estonia, the Netherlands, and Finland reported freezers and fridges suddenly switched into defrost mode or driven up to around 50°C (122°F). Food spoiled, shelves were emptied, and losses in individual stores reached tens or hundreds of thousands of euros. One Belgian Delhaize store alone estimated roughly €100,000 in lost product.

This is the second wave in recent weeks. Last month hundreds of French supermarkets suffered the same kind of attack—remote control of internet-connected refrigeration controllers (many of them older units that were still reachable from the network). Attackers disabled alarms, extended defrost cycles, or simply raised the setpoints. The result was the same: ruined food and operational chaos.

These were not high-end consumer smart fridges. They were commercial operational-technology systems that had been put online for remote monitoring and maintenance. Once exposed, they became a convenient target. The principle is identical at home.

Every connected device expands the threat surface. A smart thermostat, a connected light switch, a camera, or any other automation that talks to the internet (or even just your local network) is another system that can be reached, misconfigured, or abused. In stable times the convenience feels worth it. In unstable times the same convenience becomes an unnecessary risk. You do not need a remote attacker to be able to change your heat, lights, or other systems. You can do that yourself.

There is no single perfect solution. You will still have some digital systems, and you still need to keep those you keep reasonably secure. But you *can* shrink the surface under your control:

- Prefer manual or local-only controls for lighting, heating, and cooling.
- If a device must be networked, keep it isolated and updated; better yet, ask whether it truly needs to be networked at all.
- Treat “always-on remote access” as a feature you have to justify, not a default.

Turning your own lights on and setting your own thermostat is not a hardship. It is a small, repeatable way to reduce the number of systems an adversary can reach. The attacks on European grocery freezers over the last couple of days are a clear reminder of what happens when that decision is deferred until after the systems are already online and exposed.

Stay prepared.

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