The foreign exchange specialist reports that some systems are now back up and running following the ransomware attack.
The companies plan to warn the PM of the risks of banning Huawei from the 5G network, Sky News learns.
The technology could be prohibited in public for up to five years as regulators figure out how to ensure EU citizens' privacy.
"By the way, do you want to run Twitter?" joked Mr Dorsey during his video call with the Tesla pioneer.
The pioneering scheme is seen as playing a key part in the drive to tackle toxic vehicle emissions and ensure cleaner air.
Kye Vincent was eight years old when doctors had to amputate both of his lower legs, his right hand and part of his left hand.
Molly Russell was 14 when she died days before her birthday after viewing graphic self-harm and suicide material on Instagram.
According to EU officials, "one-size-fits-all" chargers would make customers' lives easier and help the environment.
Sepsis, which can lead to multiple organ failure, is thought to cause one in five deaths worldwide each year.
The government has been criticised for so far refusing to fully offer the drug in England.
People visiting or returning to Wuhan have been warned to wear masks and seek medical attention if they develop a cough and fever.
Scientists have warned that such events will likely become more frequent due to climate change.
A new theory explaining how theropods were able to evolve into birds has been proposed, despite the lack of fossil evidence.
Astronomers have figured out the orbits of the so-called "G objects" around the black hole at the centre of galaxy.
Three viable embryos have now been created of the "functionally extinct" northern white rhino, and a surrogate is being sought.
Trump incorrectly characterised Apple as "refusing to unlock phones" for law enforcement, despite it doing so thousands of times.
UK-wide, Action Fraud has received over 200 reports about such incidents since September - with victims losing at least £400,000.