In a brief update on the status of its “security incident,” Macmillan said this morning that in the U.S. it is accepting orders electronically, but is “unable to process them at the time.” Earlier this week, the company said that it could not “process, receive, place, or ship orders,” as a result of taking its systems offline as a precautionary measure following the unspecified attack.

Macmillan said it has “made good progress getting our teams access to key systems,” but repeated an advisory it has previously issued: “Customers and other third-party partners may notice that certain systems are unavailable while these efforts are underway. Please know that the Macmillan team is working around the clock on this restoration and installation of additional network safeguards.”

In a story in the Wall Street Journal on Wednesday, Barnes & Noble and other major accounts said they didn’t think Macmillan’s inability to ship titles would impact sales unless it dragged on.

In concluding its Friday update, Macmillan said it will provide an updated statement when its systems are restored. The attack also affected Macmillan’s U.K. operation, and in the update, the company said its U.K. warehouse resumed operations on June 28.