Is this a valid message?

This is a scam - a very common one. DO NOT respond to it in any way: at best it's trying to sell you expensive and totally useless software.

You don't have a virus. No-one can detect a virus on your computer remotely, and in any case there are no viruses as such in the wild affecting Macs (though lots of malware you get tricked into installing yourself).

Real emails from Apple always address you by name and come from the apple.com domain, not some address that happens to have 'apple' in it somewhere. If you hover the cursor over any links without clicking on them the actual URL will show as a tooltip and if it's genuine it will be to an apple.com URL. Apple will never ask you to 'verify' your address, account or details in an email and will never send you messages telling you that your account has been or is about to be locked, or that you have a virus.

If you are uncertain about an email you can post it here (copy and paste, not as an image) and we can check it - however make sure to remove your own email address if it's showing, never post that in the forums.

You can report fraudulent emails to Apple by forwarding them as an email attachment to reportphishing@apple.com

As a general rule, you should never ever respond directly to any

pop up add/warning/alert. If you are interested in something in a pop up,

Google the company/product and verify it is something you want

and are interested in. If it is some alert or warning, verify it it directly

from the source, never from the pop up.

Although some of the pop ups may be good intentioned, a large

number are usually some sort of scam.

BTW, never ever download anything unless it is directly from a

vendor site or a reputable retailer.