Security concern

Such messages are scams from criminals. Close the offending page and avoid sites that are involved in such bogus advertising tactics.

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

it may be hacked, yes. but its not a good idea to click on unsolicited links. if you dont have security on your phone you should install one. i like norton, they have lots of options their vpn is free i think

scam/phishing

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

there is no reason to think it's hacked.

Security apps do squat for you.. there is no need to install one.