This is startling data. 40% of respondents in a recent global survey were told NOT to report a cyber breach in a timely manner. And 70% of those respondents from the U.S. were told to not disclose. 

Now the Securities & Exchange Commission (SEC) is stepping in. They have proposed a new rule that would require an annual report on corporate boards' cybersecurity expertise. 

Of course, the best defense against all of this is to identify all of your potential vulnerabilities and close them off from attack.