Labour is assuring members their credit card details haven't been compromised, after an embarrassing security breach by a right-wing blogger.
Cameron Slater, who writes the Whale Oil blog, obtained hundreds of pages of sensitive data on the party's members and donors.
He claims he's done nothing illegal and a lack of security on Labour's websites is to blame.
He's also warned that scammers may have been able to get supporters' credit card details through the same methods.
Labour has released a letter from a payment processing company, saying the credit data was encrypted before being permanently disposed of.
They say despite the website breach, no credit card data has been compromised.
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