Pop up says your computer is infected? It's probably a scam

How to tell it's a scam:

• It gives a phone number to call. Microsoft and Apple don't put phone numbers in warnings.
• It says not to turn off your computer.
• Someone calls you out of the blue saying they're from Microsoft, Apple or your internet company.
• They ask you to install a program so they can "fix" it remotely, or to pay with gift cards.

What to do:

• Don't call the number. Close the browser. If it won't close, hold the power button to shut down, then restart.
• When the browser opens again, don't restore the last pages.

If you already called or let someone in:

• Turn off the internet (unplug the cable or turn off WiFi).
• Call your bank if you paid or shared card details.
• Change your email password from a different device.
• Bring the computer in so we can remove anything they installed and check for remote access programs.