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Mixcloud user accounts up for sale on dark web – Naked Security

Security Watch

Mixcloud user accounts up for sale on dark web – Naked Security


A hacker is ransoming account data stolen from UK-based music streaming service Mixcloud, according to news websites contacted by the attacker last week.

News of the breach first emerged on Vice, which received 1,000 sample accounts from a claimed total of 21 million that a hacker called ‘A_W_S’ seems to have nabbed on or around 13 November.

The data includes account holders’ email addresses, IP addresses, and password hashes, which Vice was able to verify as genuine. No financial data or mailing addresses are involved as the company says it doesn’t store these.

The sum reportedly demanded by the hacker is a surprisingly modest 0.5 bitcoins, equivalent to $3,700 at this week’s exchange.

This is a dark web auction so it’s possible this is simply a starting price against which the hacker wants Mixcloud to bid to have the data returned.

It’s also possible that the hacker doesn’t have as much data as claimed – for now, it’s impossible to know.

Mixcloud’s CTO and co-founder Mat Clayton told Vice he’d not been aware of the breach until told about it by journalists and that the company was “actively investigating” what had happened.

A subsequent announcement by Mixcloud confirmed the breach but offered reassurance regarding the strength of the password hashing used, reportedly SHA-256:

The passwords that Mixcloud does store are encrypted with salted cryptographic hashes to ensure that they are extremely difficult to unscramble. This means that they are unlikely to be decrypted by hackers.

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