Hackers using the name "Mr. Smith" posted a fresh cache of stolen HBO files online on Monday, and demanded that HBO pay a ransom of several million dollars to prevent further such releases.

The data dump included what appear to be scripts from five "Game of Thrones" episodes, including one upcoming episode, and a month's worth of email from the account of Leslie Cohen, HBO's vice president for film programming.

There were also internal documents, including a report of legal claims against the network and job offer letters to top executives.

HBO, which previously acknowledged the theft of "proprietary information," said it's continuing to investigate and is working with police and cybersecurity experts. The network said on Monday that it still doesn't believe that its email system as a whole has been compromised.