Online gambling operator BetUS has become the latest target of a shadowy hacking group that’s holding the gambling operator’s internal data for ransom.

Last week, the self-described ‘cryptoransomware’ group known as Maze announced a fresh batch of companies from which it claims to have obtained large amounts of internal data. These companies include (ironically enough) cyber security insurance firm Chubb, French firm Bouygues Construction, as well as Curacao-licensed online sportsbook BetUS.

The BetUS page on the Maze website cites three apparently compromised BetUS emails – [email protected], [email protected] and [email protected] – and posted two ‘proofs’ of some of the data the hackers said they obtained from BetUS.

The proofs total nearly one gigabyte in size and include technical files relating to BetUS gambling software, as well as a much larger proof containing a wide range of internal company documents. These files include the minutes of board meetings, directorship changes, bank forms and even a few passport scans of company execs.