Google's parent company, Alphabet, has struck a deal to buy cybersecurity firm Wiz for $32 billion US in what would be the tech giant's biggest-ever acquisition, a move which comes at the same time it's facing a potential breakup of its internet empire.

Google’s agreement to buy cloud security startup Wiz will face antitrust scrutiny amid Alphabet’s ongoing legal battles.

Wiz was founded only five years ago but offers an increasingly important cloud-security service as cyber risks grow.