• Use anti-spam and anti-phishing email protections that help to identify and quarantine malicious emails.

• Implement heuristic analysis mechanisms that scan for certain shared components of different threats.

• Use emulation and virtualization tools that better understand a file’s behavior in a virtual environment.

• Tighten employee access control methods to sensitive and essential systems.

Read more at: https://www.thesslstore.com/blog/polymorphic-malware-and-metamorphic-malware-what-you-need-to-know/