Updated May 19, 2017
The WannaCry ransomware malware broke onto the world scene on Friday May 12, 2017 when it infected over 200,000 computers in more than 150 countries. Thankfully, the impact on manufacturing systems and critical infrastructure was relatively low. However, while WannaCry’s spread has been curtailed for now, new variants have been reported.
Immediate actions are to determine whether your systems are vulnerable by identifying computers and devices running Windows operating systems not updated with the latest security patches or communicating with the SMB1 protocol. If these situations exist, you need to execute a plan to mitigate and protect against these security weaknesses.
While we can take a deep breath that WannaCry did not shut down essential services such as power systems and water systems, the malware is certainly a very loud wake-up call Let’s look at what can be done immediately, and over time, to prevent and mitigate ransomware infections to industrial systems.