Email Spoofing: What it is, Why it Happens & How to Stop It

Published: October 2, 2025

Recently, a couple new clients recalled an unsettling experience: they’d received emails that looked like they were sent by… themselves. Talk about confusing!

Just imagine opening your inbox and seeing your own name as the sender of a message you definitely didn’t write.

Beyond the immediate disorientation, moments like these raise big questions — Has my email been hacked? Has someone stolen my account? Was I emailing in my sleep again last night?

The good news: in most cases — like the instances our clients faced — accounts weren’t hacked at all. But there is risk if you don’t know what to do.

What happened is something called email spoofing. Let’s break it down.

What Is Email Spoofing?

While there are legitimate uses for spoofing, in this case we’re talking about what happens when a cybercriminal forges the “From” address in an email to make it look like it’s coming from you (or sometimes your boss, your coworker, or even your bank). This is more than a display name change — both the name and email address appear to be legitimate.

Think of it like if someone mailed you a letter, but instead of signing their own name, they scribbled your name in the return address. The letter didn’t actually come from you — but the envelope sure makes it look that way.

Email was invented in 1971, and it didn’t take long for malicious tricksters and bad actors to start running these kinds of scams. Over time, new add-ons were created to bake in stronger ID protections.

Meet the Email Bodyguards: SPF, DKIM and DMARC

To help prevent nefarious spoofing attempts, most modern email systems rely on a trio of security measures that act like bouncers at the club:

SPF (Sender Policy Framework): Checks if the server sending the email is actually allowed to send for that domain.
DKIM (DomainKeys Identified Mail): Adds a digital “signature” to make sure the email wasn’t altered on the way to your inbox.
DMARC (Domain-based Message Authentication, Reporting & Conformance): The rulebook that says what to do if a suspicious email fails the first two checks. As in… do we let it in, quarantine it, or bounce it at the door?

If these checks aren’t set up correctly, spoofed emails can slip through and land in your inbox.

Why Does This Matter?

Beyond the obvious annoyance, spoofed emails are often used for scams. If an attacker can impersonate you or your company, they might try to:

Trick your coworkers into wiring money.
Fool clients into sharing sensitive information.
Damage your company’s reputation.

Nobody wants their name attached to a phishing attempt.

So, What Can You Do?

If you own or manage a business, protecting your email reputation is critical. Here are a few steps to take:

Check Your Domain Settings – Make sure SPF, DKIM and DMARC are properly in place. Without them, your email domain is an easy target for impersonation.
Quarantine First, Then Tighten the Reins – Starting with a “quarantine” DMARC setting puts suspicious emails in a holding area. Once you know nothing legitimate is being caught, you can move to “reject,” blocking fakes outright.
Educate Your Team – Even with protections, some emails will get through. Make sure employees know how to spot the red flags of phishing: strange wording, unexpected requests, or links that don’t add up.
Work with a Trusted IT Partner – Managing DNS records and mail security can get technical (and mistakes here can disrupt your email flow). This is exactly the kind of thing we help companies with every day.

The Bottom Line

Email spoofing may look scary, but with the right safeguards in place, it doesn’t have to cause panic. Setting up protections like SPF, DKIM and DMARC not only keeps those “fake you” emails out of inboxes, they also protect your brand’s reputation and builds trust with your clients.

If you’ve ever seen a suspicious email that looked like it came from… well, you, you’re not alone. And the fix is clear: strong email authentication.