HONG KONG (Reuters) - Chinese ride-hailing firm Didi Global Inc is in talks with state-owned information security firm Westone to handle its data management and monitoring activities, sources said, as part of its efforts to placate domestic regulators.

The sources declined to be named as they were not authorised to speak to the media.

The largest Chinese ride-hailing group became the target of an investigation by regulators in the country just days after it raised $4.4 billion in an initial public offering in the United States.

The powerful Cyberspace Administration of China (CAC) last month launched a data-related cybersecurity investigation into Didi, citing the need to protect national security and the public interest.

Didi is in discussions with Westone Information Industry Inc, which would be the main third-party company to manage its massive data stored domestically as per domestic regulators' guidance, said two people with knowledge of the matter.

Didi, Shenzhen-listed Westone, the CAC, and the State Council Information Office did not immediately respond to Reuters request for comment after regular Asia business hours on Friday.

(Reporting by Julie Zhu in Hong Kong; Editing by Sumeet Chatterjee and David Holmes)