Today's cybercriminals are highly skilled, resourceful, and determined. Vulnerabilities such as web server misconfigurations or components that include known vulnerabilities give cybercriminals exploitation opportunities. Infrastructure and operations (I&O) leaders are uniquely positioned to help security and risk (S&R) teams assess, find, and remediate vulnerabilities. This report tells I&O pros how they can increase cybersecurity by taking five steps to create and sustain a responsive security environment for applications. This is an update of a previously published report; Forrester reviews and revises it periodically for continued relevance and accuracy.