What email spoofing is
Email spoofing is when a message is sent with a forged From: address so it appears to come from someone it doesn't. The sender manipulates the visible address to impersonate a trusted domain — like your firm's.
A spoofed message can look indistinguishable from a genuine one to a client. Without email authentication in place, the recipient's mail server has no reliable way to tell the real message from the fake.
Why accounting and tax firms are targeted
Accounting and tax firms send invoices, document requests, e-file confirmations, and sensitive correspondence from their domain. Clients are conditioned to expect and act on those messages.
That makes your domain an attractive target. A convincing spoof can trick a client into sending documents, payment, or credentials to an attacker — and because the message looks like it came from you, the client may not question it.
How SPF, DKIM, and DMARC help
SPF (Sender Policy Framework) lists which mail servers are authorized to send as your domain. DKIM (DomainKeys Identified Mail) adds a cryptographic signature so recipients can verify a message is genuine and unaltered.
DMARC ties the two together with a policy that tells receivers what to do when authentication fails — monitor, quarantine, or reject — and can send you reports about what's being sent as your domain.
Together, these don't eliminate all risk, but they make impersonation far harder and give you visibility you wouldn't otherwise have.
What a professional assessment adds
Reading about email authentication is different from knowing whether your domain is actually configured correctly. A misconfigured record can be as risky as a missing one.
The RingWarden Professional Security Assessment reviews your email authentication configuration using publicly available information, investigates and validates potential issues, and reports them in plain language with practical recommendations.
This article is general information for accounting and tax professionals. It is not a security assessment, audit, guarantee of security, or compliance certification. For a professional review of your firm's public-facing digital infrastructure, consider the RingWarden Professional Security Assessment.