A number of important industries are dangerously vulnerable to cyberattacks. Small businesses are far less prepared than big ones. And plenty of companies aren’t taking basic steps to improve their readiness, leaving them exposed to breaches that can threaten their existence.

These are some of the findings from a survey of information security officers at nearly 400 companies by WSJ Pro Research. The survey offers a revealing snapshot of the state of cybersecurity—in particular, what kinds of companies are unprepared and why.

Read More