Caller claimed to be from Telstra and said that my internet could be compromised, I told him that I do not have Telstra internet but he went on about how Telstra provides all internet IP addresses, anyway it sounded phoney to me so I politely hung up. Reverseaustralia did not recognise the number and I don't think that Telstra would be calling everybody that has an internet connection to let them know that it has been compromised