Not sure if anyone is in a similar boat, but I've received an email from 2degrees stating that my account was part of a data breach.
They don't mention how many accounts were accessed, they just say "Some".
Pretty shocking from them.
I only have broadband with 2Degrees and after changing passwords, it appears they require a 2Degrees only number to be added to the account to be sent a verification code to reaccess the account. 
Advise changing your password asap if you have received this.
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