Home users and businesses should make sure their Windows Operating Systems and security software are updated in order to stop the spread of WannaCrypt. Make sure your copy of Windows is updated, click HERE to read Microsoft’s Customer Guidance post about this ransomware. Microsoft even took usual steps and released updates to unsupported Operating systems such as XP. From the article linked above:
“Additionally, we are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003. Customers running Windows 10 were not targeted by the attack today.”
We at SUPERAntiSpyware stress that you also make sure you are using the latest edition of SUPERAntiSpyware, version 6.0.1240 as of this blog post with the most recent definitions AND make sure you have Real-Time Protection set to enabled.
If you have your Windows Firewall disabled, immediately enable it. If you have a third-party Firewall, make sure it is enabled and the software is current.