Palo Alto Networks Completes Acquisition of Expanse News provided by Share this article Share this article SANTA CLARA, Calif., Dec. 15, 2020 /PRNewswire/ -- Palo Alto Networks (NYSE: PANW), the global cybersecurity leader, today announced it has completed its acquisition of Expanse Inc., a leader in attack surface management. Expanse brings a unique level of visibility to security through the continuous scanning of exposed assets. This functionality is both critical and timely: in the case of the SolarWinds vulnerability this week, Expanse is able to provide organizations with the ability to scan the entire internet for publicly exposed servers and analyze outbound behavior to detect compromise.