Cybersecurity

5 Signs of Business Email Compromise Every South Florida SMB Should Know

Infinity Network SupportAugust 18, 20266 min read
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Business email compromise now costs companies more than any other cybercrime, and South Florida SMBs are frequent targets. These five warning signs can help your team catch an attack before a wire transfer goes out the door.

Business email compromise (BEC) does not look like typical hacking. There is usually no malware, no ransom note, and no obvious breach — just a convincing email that talks an employee into wiring money or changing payment details. It is now the single costliest category of cybercrime reported to the FBI each year, and South Florida's concentration of real estate, professional services, and import-export businesses makes the region a frequent target. Here are five signs your team should be trained to catch.

1. A Sudden Change in Payment Instructions

The single most common BEC pattern is an email — often appearing to come from a real vendor, landlord, or executive — asking to update bank account details for an upcoming payment. Attackers frequently time these requests around real invoices or closings they have learned about by monitoring a compromised mailbox, which makes the request feel routine rather than suspicious.

What to do: Require a phone call to a known, previously verified number (never a number in the email) before changing any payment or banking detail, no matter how legitimate the request looks.

2. Urgency and Pressure to Bypass Normal Process

"I need this done before I board my flight" or "this is time-sensitive, please handle discreetly" are classic BEC phrasing. Attackers impersonating executives lean on urgency and a request for confidentiality specifically because it discourages the employee from checking with a second person — which is exactly the verification step that would catch the fraud.

What to do: Put a policy in writing that no payment request is ever "too urgent" to verify through a second channel, and make clear that employees will never be penalized for slowing down to check.

3. Look-Alike Domains and Subtle Email Address Changes

Attackers frequently register domains that are one character off from a real vendor or partner (an extra letter, a swapped 'rn' for 'm', a '.co' instead of '.com') and use them to send convincing follow-up emails on an existing thread. At a glance, in a busy inbox, these are almost impossible to catch by eye alone.

What to do: Deploy email security tooling that flags look-alike domains and newly registered sending domains automatically — do not rely on employees to spot a one-character difference under time pressure.

4. Requests That Skip Normal Approval Chains

Most South Florida businesses have some form of approval process for large payments — a second signature, a purchase order, a finance manager sign-off. BEC emails are frequently written to specifically ask the recipient to skip that process "just this once," often citing confidentiality or time pressure as the reason.

What to do: Make dual approval for wire transfers and vendor changes a hard technical control in your accounting system, not just a policy — so it cannot be skipped even under pressure.

5. Login Alerts or Mailbox Rules You Do Not Recognize

Many BEC attacks start with a compromised mailbox, not a spoofed one. Attackers who gain access often quietly create forwarding rules or filters that hide their tracks, then wait and watch real conversations before striking. An unfamiliar sign-in alert or a mailbox rule your team did not create is a strong early indicator of compromise.

What to do: Enable multi-factor authentication on every business email account and review mailbox forwarding rules quarterly — this single control stops the large majority of account takeover attempts.

BEC works because it targets people and process, not just technology — which means the fix has to combine both. If your business has not reviewed its payment verification process or email security controls in the last year, that gap is exactly what attackers are counting on. Call us at 786-991-0111 or schedule your free IT assessment online.

See how we help South Florida businesses stop BEC and phishing attacks before they cost you. Explore our cybersecurity services.
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