Harden your email systems
You have the greatest firewall and A/V your current provider could sell you to make killer margin. Now what?
Email is the easiest way to get in to your systems legitimately or not. It’s direct and likely not set up correctly, users are trained to open ever email as soon as possible.
Layering additional security with more advanced functionalities, such as URL scanning and attachment sandboxing onto Office 365 is critical.
Are you set up to filter malicious file types and extensions, or non-business-related IP addresses.