On May 12, 2017, Microsoft issued a statement confirming a number of their customers had been affected by the malicious WannaCrypt ransomware malware. CenturyLink has taken steps to ensure our Cloud environment has the latest patches and is monitoring for any additional related vulnerabilities.

If you believe your organization is impacted we recommend all CenturyLink Cloud customers take the below steps to further secure your environment:

  1. Install Microsoft Security Update MS17-010 to address the vulnerabilities by correcting how SMBv1 handles specially crafted requests. Details here: https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
  2. Confirm that anti-malware is deployed and updated and work with your provider to confirm you are protected.
  3. Ensure the following IP ports (TCP 139, TCP 445, UDP 137 and UDP 138) are blocked at the firewall unless essential to your operations.

If you have any questions or concerns, please contact cloudhelp@ctl.io