Before revision: According to the advisory division of Homeland Security, "Malicious cyber actors are targeting unpatched systems with the new threat , ... and strongly recommends using a firewall to block server message block ports from the internet and to apply patches to critical- and high-severity vulnerabilities as soon as possible."
After revision:   strongly recommends using a firewall to block server message block ports from the internet and to apply patches to critical- and high-severity vulnerabilities as soon as possible."