- Do not click on links or download files in emails unless you know for sure that they are from someone you know and trust;
- Ensure your personal devices are updated and patched;
- Regularly backup your data so you can recover your systems if they become infected. Microsoft released a patch in March that addresses this issue.
Ransomware is a type of malicious software that infects a computer and restricts users' access to it until a ransom is paid to unlock it. The malware spreads by "phishing," luring unsuspecting users to click on infected email attachments and links in emails to launch the attack. Unpatched or out-of-date systems are particularly vulnerable to ransomware.
DHS has previously released information on best practices to address ransomware. That information is available here.