Business Email Compromise (BEC) is one of the fastest-growing cyber threats affecting small and mid-sized businesses today. Unlike traditional cyberattacks, BEC doesn't rely on malware or sophisticated hacking techniques. Instead, attackers exploit trust, impersonate legitimate contacts, and trick employees into sending money, sharing sensitive information, or providing access to company systems.
The worst part? Most businesses don't realize they are vulnerable until after an attack has already happened.
At LI Tech Advisors, we work with businesses across Long Island every day, and we consistently find that many organizations are missing the basic protections needed to stop these attacks. Fortunately, preventing Business Email Compromise doesn't require expensive technology—it requires the right security controls and processes.
Business Email Compromise occurs when cybercriminals impersonate executives, employees, vendors, or trusted partners to convince someone within your organization to take action.
Common examples include:
These emails often appear completely legitimate, making them extremely difficult to detect.
The first and most important step in preventing Business Email Compromise is protecting your email domain.
Many small businesses still lack proper email authentication, allowing attackers to send messages that appear to come directly from the company.
Three essential email security records help prevent this:
SPF specifies which email servers are authorized to send email on behalf of your domain.
DKIM adds a digital signature to outgoing messages, allowing receiving servers to verify that the message has not been altered during transmission.
DMARC tells receiving mail servers what to do when an email fails SPF or DKIM checks. Depending on your policy, suspicious emails can be monitored, quarantined, or rejected entirely.
When SPF, DKIM, and DMARC are configured correctly, it becomes significantly harder for attackers to impersonate your organization through email.
If there is one security control every business should implement immediately, it's Multi-Factor Authentication (MFA).
Passwords alone are no longer enough.
Employees frequently reuse passwords, and credentials are routinely exposed through phishing attacks and third-party data breaches. If an attacker obtains a password, MFA acts as a second layer of defense by requiring an additional verification step before access is granted.
Without MFA, a compromised email account can allow attackers to:
Requiring MFA on every mailbox dramatically reduces the risk of account takeover.
Technology alone cannot stop Business Email Compromise.
Every organization should establish a simple verification policy for requests involving:
A best practice is straightforward:
Always verify financial or sensitive requests using a separate communication method.
If you receive an email requesting payment or account changes:
This simple habit prevents the majority of BEC incidents.
Old accounts create unnecessary risk.
Former employees, inactive mailboxes, and unused shared accounts often remain active long after they are needed. These forgotten accounts can become easy entry points for cybercriminals.
At least quarterly, businesses should:
If an account is no longer needed, disable it.
One of the first actions attackers take after compromising an email account is creating forwarding rules.
These rules silently send copies of incoming emails to an external address, allowing attackers to monitor communications without repeatedly accessing the account.
Most organizations rarely review these settings.
Make it a standard practice to inspect forwarding rules across all business email accounts on a quarterly basis.
Cybersecurity awareness training does not need to be complicated.
Your employees should consistently follow three basic rules:
Always verify the actual email address—not just the display name.
Inspect links before selecting them to ensure they lead to legitimate websites.
Requests involving urgency, money, passwords, or sensitive information should always be verified through a separate communication channel.
Organizations that consistently practice these habits experience significantly fewer cybersecurity incidents.
Today's phishing and impersonation attacks are more convincing than ever.
Cybercriminals conduct extensive research before targeting businesses. They study websites, LinkedIn profiles, social media accounts, and company structures to craft highly believable messages.
Artificial intelligence is making these attacks even more persuasive by enabling attackers to generate realistic emails at scale.
Because of this, businesses can no longer rely on employees simply "spotting" suspicious messages. A layered security strategy that combines technical controls with employee awareness is essential.
Business Email Compromise continues to be one of the most financially damaging cyber threats facing organizations today. The good news is that most attacks can be prevented with a few foundational security measures.
If you're unsure whether your domain is properly protected, LI Tech Advisors offers a free email security assessment that will show you exactly which protections are currently in place and what may be missing.
Protecting your business starts with understanding where your vulnerabilities exist.
Ready to see if your business is protected? Contact LI Tech Advisors today for a complimentary email security assessment and expert guidance on strengthening your defenses.
Anthony has been in the MSP business since before the acronym existed. Managed IT once started as break-fix solutions and some light phone support.
Since then, he has seen the industry flourish into a landscape of platforms, cloud servers, software tools and AI . Tailoring network configurations and software stacks to the specific needs of each business.
In his current role, he focuses on proactive planning, ensuring clients can avoid potential issues altogether. This involves meticulous planning for enhanced business continuity, allowing swift resolution of any unforeseen challenges. What initially began as addressing "fires" through break-fix solutions has evolved into a proactive approach, ensuring that such issues are prevented from arising in the first place.
