The incident handling and response (IH&R) team of an organization was handling a recent cyberattack on the organization's web server. Fernando, a member of the IH&P team, was tasked with eliminating the root cause of the incident and closing all attack vectors to prevent similar incidents in future. For this purpose. Fernando applied the latest patches to the web server and installed the latest security mechanisms on it. Identify the IH&R step performed by Fernando in this scenario.