About the Zepto ransomware

Hey guys!

I would like to ask, have you updated the signature to detect the Zepto ransomware yet? The firm I work at uses FortiClient and some Forti hardware to filter network traffic, but three days ago one of my co worker got hit by Zepto. Is there any way to block that kind of threat with Forti, because some of my co workers still don't get it to NEVER open spam mails.