New Delhi, June 17 -- Japanese technology giant SoftBank Group Corp. is launching a service using OpenAI technology to protect against the looming threat of cyberattacks, both companies said Tuesday.

Chief Executive Masayoshi Son called Japan' s vulnerability to cyberattacks "a crisis," comparing it to a potential assault by machine guns instead of the rifle shots of the past.

SoftBank will offer "a patching service," targeting the nation's top 3,000 companies behind crucial infrastructure like airports, power systems and transportation, Son said.

"I feel it is our duty," Son said, repeatedly referring to the criminal attackers as "the bad guys."

The service involves first diagnosing any weaknesses to attacks, and then analyzing what ...