A cyber attack that forced the U.S. division of Macmillan to take its computer systems offline since Saturday has also impacted the firm's U.K. division. In the U.S., Macmillan's offices have been closed all week and, with the system shut down, the company has been unable to “process, receive, place, or ship orders," as reported yesterday. An update is expected today.

On Tuesday, Macmillan U.K. echoed the U.S. division in an email that went out to the industry. "Macmillan recently experienced a security incident, which involves the encryption of certain files on our network," the email stated. "As a precautionary measure, we immediately took systems offline to prevent further impact to our network. We are working diligently with specialists to investigate the source of this issue, understand its impact on our systems, and to restore full functionality to our networks as soon as possible."

The email continued: "Customers, employees, and other third-party partners may notice that certain systems are unavailable while these efforts are underway. We appreciate your patience and understanding and apologize for any inconvenience. Please know the Macmillan team is working around the clock on this restoration and installation of additional network safeguards. We will provide further updates as necessary and as relevant information becomes available. Anyone wishing to contact the editorial teams at Pan Macmillan today, Tuesday 28 June 2022, can use these two email addresses: panmacadultsubmissions@gmail.com or macmillanchildrenssubmissions@gmail.com."