Viruses and malware have changed a lot over the years. The old-fashioned type (pop-ups, ransom demands, your home page being hijacked) is still around, but the more dangerous modern stuff is quiet. It sits in the background, stealing information or using your computer's resources for things you'd rather not know about, without making any obvious fuss. Here's what to look for.

Common signs of infection include unexplained slowdowns, browser changes you didn't make, pop-up warnings, disabled antivirus software, and unusual account activity. If you suspect malware, disconnect from the internet and run a full scan before doing anything else.

This is one of the most common issues I deal with for homes and small businesses across Uckfield and the wider East Sussex area.

Warning Signs to Watch Out For

None of these on their own is definitive proof of infection, but they're worth taking seriously:

  • Your computer has suddenly become slower for no obvious reason, especially if the fan is running hard when you're not doing much
  • New toolbars or extensions have appeared in your browser that you didn't install
  • Your home page or default search engine has changed without you doing it
  • You're seeing pop-ups warning you your computer is infected, which is often a sign it already is
  • Your antivirus has stopped working or won't update. Some malware specifically disables security software
  • Programs open and close by themselves, or the mouse moves on its own
  • You're being logged out of accounts you haven't logged out of, or getting unexpected security alerts from Google, Microsoft or your bank
  • Your internet is much slower than usual. Some malware uses your connection constantly in the background

What NOT to Do

If you think you've got something, resist the urge to start clicking on things. Here's what not to do:

  • Don't call a phone number from a pop-up. "Your computer has a virus, call Microsoft on 0800..." is a scam. Always. Microsoft does not call you unsolicited and does not put phone numbers in browser pop-ups.
  • Don't pay a ransom if you see a ransomware demand, without taking professional advice first. Payment doesn't guarantee you'll get your files back.
  • Don't keep using the computer normally if you think it's compromised, especially for online banking.
  • Don't download the first antivirus tool that comes up in a search. Some "security tools" are malware themselves. Stick to well-known names: Malwarebytes, ESET, Norton, Bitdefender.

Why Free Antivirus Often Isn't Enough

Windows Defender (the built-in antivirus) is much better than it used to be, and it's certainly better than nothing. But it's not the most effective option available, and it's often the first thing malware tries to disable. Free consumer antivirus tools tend to lag behind on threat definitions and offer limited protection against newer attacks.

The antivirus I install for clients is ESET. It consistently tops independent test results, it's light on resources so it doesn't slow your computer down, and as part of the GNL Protect plan it's managed centrally. It updates automatically, and I get an alert if something triggers on a client's machine.

What to Do if You Think You're Infected

If you're not sure, disconnect from the internet first (pull the ethernet cable or turn off WiFi), then run a full scan with whatever antivirus you have. If you have Malwarebytes, run that too. It's good at catching things other tools miss.

If the scan finds something but can't remove it, or if you're still seeing symptoms afterwards, it's time to get someone in. Some malware is stubborn and requires proper removal. In the worst cases, a clean reinstall of Windows is the only reliable way to be sure it's gone.

If you think your banking details or passwords may have been compromised, change your passwords from a different, clean device immediately and contact your bank. Don't wait until the computer is cleaned up. Do it from your phone now.

Need Help Sorting It Out?

Virus and malware removal is something I deal with regularly. If you're in Uckfield, Lewes, Crowborough, Haywards Heath or anywhere across East Sussex, give me a call on 01825 768548 or get in touch online. I'll tell you honestly what's there, what needs doing, and what it'll cost.

Most malware issues can be diagnosed and removed via remote support. For ongoing protection, the GNL Protect plans include managed ESET security across all your devices, so threats are caught and dealt with before they cause damage.

Frequently Asked Questions

How do I know if my computer has a virus?

Common signs include unexplained slowdowns, browser changes you didn't make, pop-up warnings, disabled antivirus, and unusual account activity. Run a full scan with your antivirus and Malwarebytes to check.

Is Windows Defender enough to protect my computer?

Windows Defender is better than nothing, but it's often the first thing malware tries to disable. A dedicated, managed antivirus like ESET provides stronger protection and is actively monitored.

What should I do if I've been scammed by a fake virus pop-up?

If you gave remote access or payment details, disconnect from the internet immediately, change your passwords from a different device, contact your bank, and have a professional check your computer for anything installed during the session.