Cryptocurrency-based online casino Stake.com has confirmed that ‘unauthorized’ transactions had occurred on its platform, with the amounts reportedly totaling over $40 million.

The platform was reportedly hacked on September 4th, causing the service to shut down for around five hours before reopening and assuring that ‘all service have resumed’ and that ‘deposits and withdrawals are processing instantly for all currencies’.

The hack is believed to have been carried out via a stolen private key.

Stake.com says it’s ‘investigating’ the incident, noting that it only keeps “a small portion of its crypto reserves in hot wallets at any given moment for these very reasons,” according to the group’s co-founder in statements to media.

The company has not confirmed the value of the transactions yet.

The group insists that user funds are safe.