Received notice of virus and asked to download spp

They have been coming often!!!

See -> Recognize and avoid phishing messages, phony support calls, and other scams

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

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If you receive a suspicious email or SMS text message that looks like it's supposed to be from Apple, please email it to reportphishing@apple.com

How to report suspicious emails, messages, and calls

• If you receive a suspicious email that looks like it's supposed to be from Apple, please forward it to reportphishing@apple.com.1  
• To report a suspicious SMS text message that looks like it's supposed to be from Apple, take a screenshot of the message and email the screenshot to reportphishing@apple.com.
• To report spam or other suspicious emails that you receive in your iCloud.com, me.com, or mac.com Inbox, send them to abuse@icloud.com.
• To report spam or other suspicious messages that you receive through Messages, tap Report Junk under the message. You can also block unwanted messages and calls.
• Report scam phone calls to the Federal Trade Commission (U.S. only) at reportfraud.ftc.gov or to your local law enforcement agency.

After you have reported, remove the message and see -> Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch

Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch - Apple Support

No this is not legit! This is a scam! Apple will never send you notifications about viruses

Those scam messages come from the web sites you visit, and their advertising partners. If you see them frequently when visiting particular web sites, consider avoiding those sites.