Sony Execs Are Now Being Forced To Use Fax Machines Because The Hack Wiped Out Their Email

GettySony Pictures CEO Michael Lynton

Staff at Sony Pictures are struggling to communicate with each other after a giant hack wiped out their internal computer system.

The Wrap is reporting that executives at Sony's motion picture studio have hit upon alternative ways to send messages instead of using the internet.

Phone calls, fax machines and hand-delivered letters are all being used to get work done, as employees are avoiding logging onto the internet in case hackers flash up another threatening message.

ImgurThe warning message sent by the hackers

Sony employees first learned they had been hacked when the mysterious "Guardians of Peace" hacker group flashed up a threatening message on their work computers. 

That wasn't the last communication, though. The hackers have issued threats and even displayed more images on Sony computers, meaning that they may still have access to the computer system.

Sony Pictures' London office has also been affected by the hack. Staff are using pens and paper, and the Wi-Fi network is out of bounds. 

A Sony insider, speaking to The Wrap, said ""The entire company is at war, no one can get their job done."

There are only a handful of internet access points for employees working at Sony Pictures' main campus. The Wrap is reporting that new Wi-Fi hotspots have been installed, replacing the old internet access points.