Glossary

The shorter name is content recognition. In Finnish, the same feature is called sisällöntunnistus.

Look for it near the guest network settings. It may also appear as device isolation, or as asiakaseristys on a menu written in Finnish.

An unpatched security flaw or a shared default password can give a criminal access to a device at home.

A compromise may not be obvious during ordinary use. Unusual network traffic or faults can still reveal it.

Bottiverkko and botnet mean the same thing.

The marking is compulsory, and a product without one is a serious warning sign. A product with one tells you almost nothing about quality.

Radio equipment has had to meet security requirements since 1 August 2025, and those requirements sit under this marking. You will only see the effect in new devices.

The setting may be under the guest-network or wireless-network settings. Its name varies by manufacturer.

This does not stop a device sending data to the internet. It restricts connections to other devices on the same network.

Cloud-storage security depends on account protection, operation of the service and retention settings.

Check who can access the data, how to delete it and what happens when the subscription ends.

The default and the name of the feature vary by manufacturer. You can switch it off in the television’s settings.

Switching it off stops the television recognising screen content for this purpose. Check the manual to see whether the same setting affects recommendations or other optional features.

The Finnish name is kyberkestävyyssäädös.

In practice it means the manufacturer has to tell you how long the product will be supported.

It is also why the old advice to look for the Finnish Tietoturvamerkki label on the box no longer holds.

Default passwords are published on the internet in model-by-model lists. Large criminal networks of devices have been built on exactly that.

Newer devices increasingly ship with a unique password on a label underneath. It is still worth changing if the device lets you.

It is why a new device gets online without anybody setting numbers by hand.

The router settings list devices that have received an address. The list may also contain devices connected earlier, and their names may be unclear.

By default your queries go to your internet provider. That is how the provider knows which sites you visit, even though what is on those sites is encrypted.

You can point the lookups somewhere else. That hands the same information to a different company; it does not make the information go away.

By default your router’s firewall blocks connections coming in from outside. Traffic going out from inside passes through.

A device can therefore start a connection to the manufacturer’s servers without the firewall blocking it. A firewall alone does not stop a smart device from sending data to the internet.

Some devices update themselves. Others wait for somebody to press a button.

Once the manufacturer stops shipping updates, newly found holes may remain unpatched. Settings can reduce exposure, but they do not repair the software.

Most current routers already have one, and it takes a few minutes in the settings to switch on.

A guest network does not protect the device itself. It limits the damage to the one device that turns out to be insecure.

The browser shows connection status beside the address and warns when a connection is not private. Do not dismiss that warning on a sign-in or payment page.

Encryption protects content, but not necessarily every connection detail. Check the site address too: HTTPS can protect a connection to a genuine site or to a scam site.

Two things link these devices. They are cheap, and they are online all the time.

That is why how long they get updates matters more than what features they have.

The outward-facing address gives away roughly the city and the internet provider. It does not give away your name or your street.

The address is not a secret. Every site you visit sees it, unavoidably.

If the settings offer something called laiteohjelmiston päivitys, that is where updates get installed.

Many phones use a private address on each wifi network. This reduces tracking from one network to another.

Restricting access by this address is not a security measure. The address can be changed in software.

The commonest way in is an attachment, or an installation somebody asked you to run over the phone or in a message.

Your operating system’s own protection and its updates cover a large part of this.

This is not a firewall, even though it looks like one. It was not designed as protection.

The protection disappears if a port is opened to the device, or if the device opens a connection outwards itself.

A password manager creates and stores different passwords for your accounts. You protect the manager itself with one strong password.

A paid version is mainly worth it when passwords have to be shared within a family.

The markers are urgency, fear and a request to do something right now. The language can be flawless and the number can look right.

Do not use the link or number in the message. Open the service’s own app or website yourself and check there.

Port forwarding can be used for remote access to a camera or recorder. It also makes the service directly reachable from the internet.

If you do not know that you opened a port, do not open one on the strength of instructions you do not understand.

The programs themselves are legal and useful. The problem is who is asking, and why.

If you opened access for a scammer, disconnect the computer and close the software. Change any credentials exposed during the session from another device.

In most homes the same box handles the connection, the wifi and the routing. The internet provider has often supplied it with the contract.

The router directs traffic between the home network and the internet. Its updates, password and remote-management settings therefore affect the whole home network.

You can change the name freely. It is neither a secret nor a protection.

Hiding the name does not make the network safer. The password and the encryption are what decide that.

A code from an app is safer than a text message, because a phone number can be hijacked. A text message is still far better than nothing.

Turn it on for your email first. Many other account passwords can be reset through it.

The support period helps you assess the device’s secure working life. You may need to find it on the manufacturer’s support site.

If the manufacturer does not state the support period, you cannot assess the availability of future fixes before buying.

A VLAN needs a router or a switch that supports it. Not every home device does.

For most people a guest network is enough. A VLAN exists for those who want finer control, not because a guest network falls short.

The term originally meant a remote connection into a company’s internal network. The VPN sold to consumers is a different product with the same name.

If your router offers a newer option, use it. If it does not, this is not a reason to replace the device.

Older WEP is a different matter. It is broken and should not be used.

It only works if both the router and the device support it. Many older devices do not.

Most routers have a mixed mode, where new devices use the new method and old ones use the old.