Computer systems from the Ukraine to the United States were affected last week by the . It’s similar to the recent last month.

The WannaCry ransomware took advantage of vulnerabilities in the older versions of Windows that allowed the infection to spread. All someone needed to do was click a malicious link and—bang!—they were infected. That is, if they hadn’t installed the patches and updates.

These attacks are a reminder of why the cloud is a safer place to do your computing.

The parade of attacks in recent years have forced enterprise IT to become more diligent about holistic security. These attacks are successful when security is not holistic, such as when patches and fixes are not applied.