1. Your Computer Suddenly Becomes Very Slow

A sudden and unexplained performance drop can be a warning sign.

Malware may use your computer's processor, memory or internet connection in the background.

Of course, slow performance can have many legitimate causes, including ageing hardware, insufficient storage or too many applications running at once.

The important factor is whether the change was sudden and unexplained.

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2. You Start Seeing Unusual Pop-Ups

Unexpected advertisements or pop-ups can indicate adware or another unwanted program.

Be particularly cautious if pop-ups claim that your computer is infected and instruct you to call a phone number or download software.

Legitimate security software will not generally require you to hand control of your computer to an unknown person through an unexpected pop-up.

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3. Your Browser Behaves Differently

Changes to your browser can also be a warning sign.

Look out for:

• An unfamiliar homepage

• Search results being redirected

• New browser extensions

• Unwanted toolbars

• Websites opening without permission

These symptoms can be caused by unwanted browser software or other malware.

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4. Unknown Programs Appear

Occasionally check the applications installed on your computer.

If you notice programs you don't recognise, investigate them before opening or uninstalling them.

Some legitimate software may be installed alongside other applications, so don't assume every unfamiliar program is malicious.

If you're unsure, professional assessment can help determine whether the software is safe.

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5. Your Accounts Start Acting Strange

Some malware is designed to steal credentials or personal information.

If you notice unusual activity on your email or other accounts, don't ignore it.

Change compromised passwords from a trusted device, enable Multi-Factor Authentication where possible, and investigate whether your computer could have been compromised.

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6. Don't Ignore Security Warnings

Modern operating systems include built-in security features that can identify many common threats.

Don't routinely dismiss security warnings without understanding what they mean.

Keeping your operating system, browser and security software up to date also helps protect against known vulnerabilities.

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What Should You Do If You Think You're Infected?

If you suspect malware:

• Disconnect the computer from the internet if appropriate

• Avoid entering passwords or sensitive information

• Don't click suspicious pop-ups

• Run a trusted security scan

• Change important passwords from a known-clean device

• Seek professional assistance if you're unsure what to do

Avoid downloading random "virus removal" software from advertisements or pop-ups claiming your computer is infected.

Final Thoughts

Not every slow computer or strange pop-up means you've been infected with malware.

However, unusual behaviour should never be ignored, particularly when it appears suddenly.

Identifying the cause early can help protect your files, accounts and personal information.

If you believe your computer may be infected, Westgate Technology can help assess the system, remove unwanted software and improve your computer's security.