The 99.9% fix: why two-step sign-in matters for your business email

If attackers had to pick one thing to break into at your business, it would probably be your email.

Email is where invoices get sent, passwords get reset and wire instructions get confirmed. Get into one real inbox, and an attacker can send messages that look exactly like they came from you, because they did.

The numbers

Phishing was the #1 cybercrime complaint to the FBI in 2024, with more than 193,000 reports.
Business email compromise scams cost businesses nearly $2.8 billion that same year.
In Verizon's 2025 report, using stolen credentials was the most common hacking technique in small and midsize business breaches.

The common thread: a password alone isn't enough anymore.

What two-step sign-in does

Multi-factor authentication (MFA), also called two-step sign-in, asks for something besides your password, usually a tap on your phone or a short code. Even if an attacker steals your password, they're stuck at step two.

Microsoft reports that MFA can block more than 99.9% of account compromise attacks. It's one of the most effective security steps a business can take, and it costs little or nothing to turn on.

Why it's not already on everywhere

Usually because nobody owns the job. MFA gets turned on for the owner, maybe the office manager, and then the shared mailbox, the old employee account and the front desk login get forgotten. Attackers look for exactly those gaps.

Rolling it out without a revolt

Explain the why first. "This is what stops someone from sending invoices as you" lands better than "IT says so."
Use an authenticator app, not text messages, where you can. It's faster and harder to intercept.
Cover every account, including shared mailboxes and admin accounts.
Plan for lost phones. Know how someone gets back in when they upgrade or lose a device.
Turn off old sign-in methods that skip MFA entirely.

Beyond MFA

MFA is the foundation. Add business email filtering to catch phishing before it lands, and a little team awareness so people know what a fake "urgent invoice" looks like, and you've closed most of the doors attackers actually use.

Not sure every account is covered? Schedule a free consultation and we'll check.

Sources: FBI IC3 2024 Internet Crime Report · Verizon 2025 Data Breach Investigations Report · Microsoft Security Blog (2019)