Scam or legit?

I keep getting texts such as these-

WARNING: Someone has entered your lOS device via a malicious app! Fix it now: cmvg88w.ekuxoxe.info

Final Warning, Joyce: Critical access failure. Attack underway. Block intruder: ca0c3i8.dsuamp.info

I was told they are a scam and I do not need protection on my iphone. Thoughts