CybSafe does not have control over the junk folder, however there is a way to prevent this on Exchange Online.
This can be fixed via a PowerShell command as per Microsoft documentation :
You can create a PowerShell command to push a Safelist on all the mailboxes, it should look something like this :
Set-MailboxJunkEmailConfiguration * -TrustedSendersAndDomains @{Add="domain1.com","domain2.com"}
Where domain1.com and domain2.com should be replaced by our expanded domains you can find in the article below :
Doing this should prevent any messages from these domains to go into the junk folder of your users.