Security alert
While using the internet to search recipes, suddenly had pop-up from ‘Microsoft’ accompanied by a verbal message which repeats itself over and over. Tells me my computer has been locked up due to being on a site which contains identity theft virus. Also instructs not to shut down or restart computer which could lead to data loss and identity theft. Tells me to call their support number. I don’t know if this is a valid warning.
MacBook Pro 13", macOS 10.14