Business Email Compromise

Law firms are attractive targets for cybercriminals because they regularly handle sensitive information, trust funds, settlement proceeds, real estate transactions, and confidential client communications. A successful compromise can give an attacker access to both valuable information and significant financial opportunities.

Business email compromise is particularly dangerous because it does not always look like a traditional cyberattack. The criminal may gain access to a lawyer’s, law clerk’s, client’s, or supplier’s email account and quietly monitor conversations for days or weeks.

During that time, the attacker learns how the firm communicates, who approves payments, when money will be transferred, and which parties are involved. When the timing is right, the attacker sends fraudulent instructions that appear to be part of the legitimate conversation.

These messages may contain familiar signatures, logos, language, and transaction details. The email may appear to come from a known client or colleague. In some cases, the attacker may even respond within an existing email thread.

This is why law firms cannot rely solely on employees noticing spelling mistakes or unusual formatting. Modern fraud attempts are often polished, informed, and carefully timed.

The most important protection is independent verification. Any new or changed payment instruction should be confirmed through a trusted communication channel using contact information that was established before the request was received.

Firms should also implement:

• Multi-factor authentication on all email accounts.
• Monitoring for unusual login activity.
• Alerts for suspicious mailbox forwarding rules.
• Strong email security and phishing protection.
• Regular security-awareness training.
• Formal approval procedures for financial transfers.

The central lesson is simple: an email should never be treated as proof of identity.

Even when a message appears completely legitimate, financial instructions must be independently confirmed. A brief verification call can prevent a loss that might otherwise create serious financial, legal, and reputational consequences.

For broader protection against email fraud, access risk and related threats, explore Atomic Guardian’s cybersecurity services.