NZtechfreak:NonprayingMantis: You don't need to prove Id to give instructions on how to reset a modem, since there is no info given away that could be considered private. There is no privacy breach here imho.
That wasn't what was asked for though, even according to Telecom's logs of the call - the request was for a password change. That isn't quite the same as asking how to reset the modem, I would think that a request of the kind that was made would warrant checks. It's not a privacy breach here, it is a network breach facilitated by the ISP, who failed in their duty to credential a caller adequately.
I think that's just confusion around the terminology. It's clear that what happened wasn't a 'password change' at the account level but rather a modem password reset, which doesn't require any privacy breach to happen since it is using publocally available information.
I.e. Press the reset button on your modem. Done.