A major cyberattack on Jaguar Land Rover, considered the most expensive security breach in British history, has prompted experts to question whether the U.K. is equipped to handle a rapidly growing cyber threat.

The Cyber Monitoring Centre, a cybersecurity body, recently estimated the hack of Britain's biggest automaker to have cost the U.K. a whopping £1.9 billion ($2.5 billion), a figure that represents the substantial disruption caused to JLR's manufacturing.

The company is currently in the midst of a phased restart to operations after the incident forced it to halt production at factories around the world.

"The threat profile is changing," Edward Lewis, director at the Cyber Monitoring Centre, told CNBC's " Squawk Box Europe " on Friday.

"What JLR now shows is that things have

See Full Page