Culprit of corporate wide infections

Who is the biggest culprit when it comes to corporate wide infections? It's the senior management!!

ThreatTrack found that bosses, or senior leadership, end up with malware on their PC or mobile device by:
56% clicked on a malicious link in a phishing email.
47% attached an infected device to a corporate PC.
45% let a familiy member uses a company computer.
40% surfed to a malware-infected porn site.
33% installed a malicious app.