The acquisition could make the Silicon Valley giant a bigger force in cybersecurity, and arrives months after an earlier round of talks collapsed.

Google parent Alphabet has struck a deal to buy cybersecurity startup Wiz for $32 billion in an all-cash transaction, in the tech giant’s largest acquisition ever.

Alphabet Inc. is in talks to purchase cloud-security company Wiz Inc. for $33 billion, restarting discussions that were called off last summer after extended negotiations, according to people familiar with the matter.