Valimail Puts an End to Attacks Against a Regional Bank and Restores Domain Reputation


After hackers discovered that the bank was not protected against email impersonation, they started sending millions of unauthorized emails that appeared to come from the bank’s domain. Mail servers receiving these messages marked the bank’s domain as a “bad actor” and started blocking all emails from that domain, including legitimate messages, bringing the bank’s business to a halt.


Valimail deployed Enforce™ and got the bank to DMARC enforcement in a matter of days — stopping the attacks cold and completely blocking millions of fraudulent emails.


The major mail receivers removed the bank’s domain name from blacklists, and the normal flow of the bank’s email traffic was revived. Since then, there has been an 88 percent decrease in the number of unauthorized emails attempting to impersonate the bank’s domain.