Mweb domain vulnarable to cybercrime

I have been de*****ed twice this year with a total loss of R1,525,000. This happened due to my Mweb hosted emails being intersepted and the bank account numbers being changed. Once the financial tractions are made the emails relating to the transaction are wiped from the system. I have now found a document pointing out to Mweb that their domain has little to no protection against email-based attacks which could lead to financial loss. Their privacy rating is also nil as they have minimal defenses for email privacy. Based on my experiences over the past month, i must warn anybody using Mweb as a host for their emails that they are very exposed to cyber********s as the Mweb domain is not adeqiately protected