HBO Assesses Damage From Cyberattack<br />Mr. Plepler wrote in the memo that the network was trying to hire an outside firm “to work with our employees to provide credit monitoring.”<br />HBO acknowledged on Monday that it had been victimized by a cyberattack, after an anonymous hacker boasted about leaking full<br />episodes of upcoming shows like “Ballers” along with written material from next week’s episode of “Game of Thrones.”<br />The hacker or hackers claimed to have stolen an estimated 1.5 terabytes of data,<br />according to Entertainment Weekly, which first reported the breach on Monday.<br />The hacker said more material would be “coming soon.”<br />The attack is not expected to have any impact on Time Warner’s deal with AT&T, according to two<br />people familiar with the matter, who requested anonymity to discuss private company matters.<br />Unlike Yahoo, which disclosed last year that hackers had stolen the credentials of hundreds of millions of users in two breaches<br />that went undetected for years, HBO does not appear to have sensitive personal information on a similar scale.<br />Much remains unclear about how much information was obtained in the cyberattack, which<br />can be difficult to determine, said one of the people familiar with the breach.<br />In a memo to staff, Richard Plepler, the premium cable network’s chief executive, said<br />that the company did not believe its “email system as a whole has been compromised” but that a forensic review was being conducted.
