Case Study: Regional Bank restores email delivery and reduces impersonation by 88% with Valimail Enforce

Valimail puts an end to attacks against a regional bank and restores domain reputation

A regional bank with more than $6 billion in assets serving customers in the Northeast faced a crisis when hackers exploited its lack of email impersonation protection. Attackers sent roughly 20 million fraudulent messages per day that appeared to come from the bank’s domain, causing major mail receivers to blacklist the domain and block all email—legitimate communications were blocked and business operations were disrupted.

Valimail deployed Enforce™ and moved the bank to DMARC enforcement in days, stopping the attacks and blocking millions of fraudulent emails. Major receivers removed the domain from blacklists, normal email flow was restored, and unauthorized use of the bank’s domain fell by 88% (from about 84% down to under 10%).