I got a Apple Platform Security alert saying my PC has been blocked for security reasons

I didn’t believe it either but the **** thing locked up my laptop! I couldn’t get rid of it, had to shut down, lost some unsaved work. (My auto backup is every 30 minutes.) Was there a way I could’ve gotten rid of it?

How do I fix it

They didn't find you, you found them, anyone that visits the sites that you were on will see the same message. The farther you explore the edges of the internet, the more likely you are to be redirected to sites that will pop up these messages. This is nothing unusual and the threats are intended to scare you into calling a fake support number and give them you Apple ID and Password or other personal information. With that information they would be able to lock you out of your own device and demand money to unlock it. In other scenarios, you will be persuaded to download some software they claim will fix the problem, but will only lead to more of the same troubles.

As said before, these are scams and there is nothing to fix. They want your money by scaring you into believing that you have a problem. Just like with the many scam emails you get, just delete and move on. Under no circumstances should you call a number and give them your Apple ID Password or financial information. With the Apple ID and Password, they could lock you out of your own device.

AppleSecurityNotification wrote:

I have received an Apple Security Notification saying access to my MacBook Air has been blocked. I believe this to be a scam but I can’t remove the notification from my screen. Please help!

Force-quit Safari, and see if that clears things: How to force an app to quit on your Mac - Apple Support

Geniuosbar_0628 wrote:

Sorry but how do I get rid of it?

There are two different types of advertisements discussed in this thread.

Here is how to clear whichever advertisement you’re encountering:

• Stop unwanted Notifications - Apple Community

• Phony "tech support" / "ransomware" popup… - Apple Community

All you need to do is look up the number in an Google search. The top results tell you it's a scam.

It is SPAM and good for you for not believing it.

Was the pointer/track pad locked up also. If not you could have tried to go to the  ➙ Force Quit menu and forced quit the browser you were using.

Yes, everything was locked. In the end I shut the laptop down and that ended it. I hate those guys.

shira214 wrote:

I didn’t believe it either but the **** thing locked up my laptop! I couldn’t get rid of it, had to shut down, lost some unsaved work. (My auto backup is every 30 minutes.) Was there a way I could’ve gotten rid of it?

You could have Force Quit Safari.

These are always scammers attempting to get your personal and financial information. Do not repond to these messages.

creativekp wrote:

just got this pop up, with a computerized voice telling me not to shut down.

didn't do it, closed out,

it is spam... right?

but how did they find me??

Yes, it is SPAM! How did they find you? Simple, you use the Internet. Sorry, but there is no simple answer to that question. In most cases, they don't find you, they just send out bulk spam messages out to the Internet, and they just make their way to you eventually. However, you do need to be actively vigilant to not make it easy to be found.

Links below should provide both insights and way to Block these Scam Artists

Stop unwanted Notifications - Apple Community

Phony "tech support" / "ransomware" popup… - Apple Community

Have you tried rebooting?

Can you post a screenshot of the notification you're seeing?

As a first guess at a solution give this a try: