Palo Alto Networks, a cybersecurity firm, agreed to acquire Expanse, an attack surface management, for $670m. The proposed acquisition is expected to close during Palo Alto Networks fiscal second quarter, subject to the satisfaction of regulatory approvals and other customary closing conditions. "We are thrilled to add the Expanse platform to our Cortex product suite. By integrating Expanse's attack surface management capabilities into Cortex after closing, we will be able to offer the first solution that combines the outside view of an organization's attack surface with an inside view to proactively address all security threats. We believe this will be a game-changer in security operations," Nikesh Arora, Palo Alto Networks Chairman and CEO.