apple.com-cleaner.systems

the last word before the dot com

example: apple.com

is the domain. Safari will show the orgization in green text if it has been identified as legitimate

example:

if you come across a domain such as

apple.support.com, or apple.computer.com, or apple.apple.apple.viruscheck.com, etc.

these are not apple sites, they would be support.com, computer.com and viruscheck.com respectively.

The placement of that name before the dot com can be a quick way to identify a scam like this, although you may see a link like

apple.com

and the actual destination is fraud

At this time there is no way a web page can identify is any computer has a virus and in addition no credible securities lab has identified a virus for OS X or iOS in the wild. This is not to say that suspicion is always a good policy regardless of what you read on the internet from anyone and everyone, myself included.

It's a scam. There are no known viruses that attack Macs. Apple would never send that.

Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support

Empty Caches (Safari menu > Preferences > Privacy > Remove all website data. (This will also remove history if you do not want to remove History open Safari Preferences > Advanced and check mark “Show Develop Menu” then choose “Empty Caches” from Develop Menu ) If the problem persists download and run MalwareBytes. Malwarebytes was developed by one of our own colleagues here in ASC. It gets rave reviews and is about the most proven anti-malware software for Mac.

If necessary, reopen Safari with the shift key held down.