I have been receiving a lot of spam sms after making a live chat call to Optus re my wifi failure not only is my wifi still down after 10 days but now getting nuisance texts as well. Very annoying. Texts saying have an mms. Link Optus-info.pw.
You are not the first person to suggest this and it does make you wonder. That link you posted is from some Russian scam site so it would be best to just delete it.