Don't ring a number shown in a pop-up. If you've given someone remote access or banking details, disconnect the computer and call your bank on a number you know is legitimate. Then run a scan with Windows' built-in security tools, change important passwords from a trusted device, starting with email, and turn on multi-factor authentication.
Can I trust the number in the pop-up?
No, don't call it. Fake security alerts often claim Microsoft, Apple or another company has found a serious problem and tell you to call straight away. A genuine browser warning doesn't normally ask you to ring a support number on a random web page. If you closed it without calling, you're already in a good spot.
What are the warning signs?
- Browser tabs or ads opening on their own.
- Your search engine or homepage changing without your permission.
- Your security software being turned off.
- Programs you don't remember installing.
- Unusual sign-in alerts for your accounts.
- The computer suddenly getting very slow, alongside other strange behaviour.
How do I scan the computer?
Windows has built-in security tools that are enough for many everyday situations. First, make sure the security definitions are up to date. Then run a scan. Don't download a pile of random “virus remover” tools from ads or pop-ups.
Which passwords should I change first?
If you think your passwords have been exposed, change the important ones from another device you know is clean. Start with your email, because whoever gets into your email can often use it to reset your other accounts.
Turn on multi-factor authentication
Turn it on wherever it's offered. It's a code or app approval on top of your password, so a stolen password on its own isn't enough to get in.
Do I need to wipe the computer?
Not straight away. Reinstalling Windows is sometimes the right call, but it's not always the first or only option. Sort out your important files before anyone does anything that erases them.
When should I get help?
Get it checked properly if you're not sure the warning was genuine, someone has had remote access, the malware keeps coming back, or you're worried about your files and accounts. Give me a call so we can work out a plan. I do virus and malware removal for home computers.
For workplaces and small businesses, see our Cyber security and backups for a business.
Need help with this?
If you'd rather have someone diagnose the problem properly, Peninsula IT Solutions provides local, jargon-free support across Frankston and surrounding suburbs.
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