Home Wi-Fi is a shared pipe, not a product feature. Before you shop for a “Wi-Fi inspector,” lock the router you already own. Log into the admin page (often printed on a sticker: 192.168.1.1 or a .local name). Change the default admin password to something unique — not the same as the Wi-Fi passphrase. Set the radio to WPA3 if every device supports it, or WPA2-AES if you still have an older TV. Turn off WPS. Install the router’s firmware update. Disable remote administration from the WAN unless you truly need it. CISA and most ISP help pages describe those steps because they work whether or not you pay Avast.

A Wi-Fi inspector in a paid suite is a helper that scans the LAN for weak settings, unknown devices, and sometimes open services. It can tell you that a leftover smart plug joined last Tuesday. It cannot invent a strong admin password you never set, and it cannot patch a router the vendor abandoned. Use it as a second pair of eyes after you do the sticker-password work. On public networks — airport, hotel, café — an inspector on your laptop is looking at a network you do not control. The useful extra there is a VPN for your own traffic, plus the habit of not using the guest “login” page on a network you did not ask staff about.

Ransomware shield and webcam protection

Avast Premium Security, as we describe it on the review, pairs the inspector with a ransomware shield (blocking untrusted programs from encrypting or mass-deleting personal files), webcam protection (stopping untrusted apps from turning on the camera), a firewall, and a Sandbox for opening a suspicious file in a walled-off space. Those are PC-centric tools. They are not a substitute for a backup you keep unplugged. A shield that works still leaves you restoring from last week if the only copy lived on that disk.

Webcam protection is a narrow, useful control: it is for the laptop camera, not the living-room Nest or a child’s tablet. If the household worry is “someone is watching the house,” that is a camera-account and router problem (unique passwords, two-factor authentication on the camera vendor, guest Wi-Fi for IoT). If the worry is “a bad download might light the ThinkPad LED,” Avast’s control is on-topic. Cover the webcam with a slider if you want a physical guarantee; software cannot beat a closed shutter.

The Sandbox is for the person who must open a weird attachment. It is not a reason to click every email. If the household never opens unknown files, you will rarely use it. If a relative forwards IRS-themed zips every April, a Sandbox plus a rule that tax documents only come from IRS.gov or your CPA is a better pair than either one alone.

Limits: renewals and upsells

Avast’s paid client has a reputation — including in our own review — for promoting other Avast products after you already paid. That is an annoyance, not a security hole, but it is a reason to decline optional offers at install. Renewal pricing can sit higher than the first-year pitch. The free Avast consumer scanner, if you ever used it, is a different SKU with a different prompt load; do not assume Premium is “the free one plus a checkbox.”

A full-screen “call this number” page is a tech-support scam, not a router finding. Close it in Task Manager and read 8 ways to tell a virus warning popup is fake. Official write-up: FTC: how to spot, avoid, and report tech support scams.

A home-and-away Wi-Fi order of operations

  1. Change router admin credentials. Update firmware. Prefer WPA3 or WPA2-AES. Disable WPS and remote WAN admin.
  2. Put cameras and cheap IoT on a guest network. Keep laptops and phones on the main SSID.
  3. Look at the DHCP client list. Name the devices you recognize. Kick the ones you do not.
  4. If you install Avast, run the inspector once and write down every finding you actually fixed.
  5. On public Wi-Fi, use a VPN for the session you care about. Do not send bank passwords on a captive portal you do not trust.
  6. Keep an offline backup. A ransomware shield is a seatbelt; a backup is the spare car.

For the product-page list, see the Avast review. For the rest of the house — accounts, kids’ devices, backups — use the privacy checklist. A Wi-Fi inspector is a flashlight. It is not the lock.