Image: Access To This MAC Has Been Blocked tech support scam

The Fake MacOS Security Center Pop-up Scam Explained

The “MacOS Security Center: Your System Is Under Threat” fake error message is a scam that pretends to be from Microsoft to trick you into thinking that your computer has crashed or that a virus has been detected. This guide teaches you how to remove the “MacOS Security Center: Your System Is Under Threat” scam by following easy step-by-step instructions.