“...using multi-factor authentication — ideally using an authenticator app, not text messages”
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Why would text messages be a bad way to add a factor in authentication? It goes to the device or number where the “authenticator app” is.
Personally, I find the idea of an “authenticator app” creepy.
“Odd” or “unusual” in a word…
SMS texts are unsecure and subject to interception and spoofing.