Why Every Business Email Needs MFA - No Exceptions
One stolen password shouldn't be enough to get into your inbox. Here's why multi-factor authentication is the single highest-impact security fix you can make this week.
Of every security recommendation we make, this is the one we push back on the least and clients resist the most. It adds one extra step to logging in. It feels like friction. And it is, by a wide margin, the single most effective thing a business can do to stop the most common type of attack we see.
How accounts actually get compromised
It's almost never a sophisticated hack of your specific business. It's a password that was reused on another website, and that website got breached. Billions of email/password combinations are circulating from old breaches, and attackers run them against business email logins automatically, at scale, all day. If your password matches one in that list, and you don't have MFA, that's the whole attack. No skill required on their part.
What happens once they're in
A compromised business email account is rarely the end goal - it's a launching pad. From there, an attacker can read your real email threads, impersonate you to request a wire transfer or invoice payment from a client, reset passwords on other accounts tied to that email, and quietly forward your incoming mail to themselves to monitor for anything useful. Business email compromise is one of the most financially damaging categories of cybercrime specifically because it doesn't trip any alarms - it just looks like email.
Why MFA stops this cold
With MFA enabled, a correct password alone isn't enough to log in - the attacker also needs your phone, an authenticator app, or a hardware key. A leaked password from some unrelated breach becomes useless to them. It doesn't make you invulnerable, but it closes off by far the most common way accounts actually get taken over.
Rolling it out without the headaches
Use an authenticator app, not text-message codes, which can be intercepted via SIM-swapping. Roll it out to your highest-risk accounts first - anyone with access to financial systems or sensitive data. And set it up properly so legitimate logins from trusted devices aren't constantly re-prompted; done right, most people barely notice it day to day.
If your business email doesn't have MFA enabled today, this is worth doing this week, not eventually.