Protect Your Inbox: Business Email Compromise BEC Warning Signs and Next Steps

In today’s digital age, your inbox can be a treasure trove for cybercriminals. A single misstep can lead to devastating financial losses, reputational damage, and compromised sensitive information. You’re likely no stranger to the threats lurking in your email inbox, but are you aware of the warning signs of Business Email Compromise (BEC)?

BEC scams have become increasingly sophisticated, with attackers targeting businesses of all sizes. According to the FBI, BEC scams have resulted in over $26 billion in losses worldwide since 2016, with a staggering 1,300% increase in reported losses between 2018 and 2019 alone. The stakes are high, and it’s imperative that you take proactive measures to protect your inbox and your clients.

So, what can you do to safeguard your business from BEC threats? The first line of defense is being vigilant and knowing what to look out for. A suspicious email can be a telltale sign of a BEC scam. But what do you do when you suspect a BEC attack? This is where having a plan in place, including a business email compromise BEC what to send clients after suspicious email template, can help mitigate potential damage.

In this article, we’ll walk you through the common warning signs of BEC scams, and provide you with actionable next steps to take when you suspect a BEC attack. We’ll also provide you with a template to inform your clients about suspicious emails, helping you to minimize the risk of financial loss and reputational damage. By being proactive and informed, you can significantly reduce the risk of falling victim to a BEC scam.

As we dive into the world of BEC scams, it’s essential to remember that awareness and preparedness are key. By understanding the warning signs and taking swift action when necessary, you can protect your business and your clients from the devastating consequences of a BEC attack.

Before It’s Too Late: A Step-by-Step Guide to Identifying BEC Threats

Take this interactive guide to assess your preparedness and response to Business Email Compromise (BEC) threats.

1. What type of email triggered your suspicion?








2. How did the email’s sender address look?






3. Was there any unusual language or tone in the email?






4. Was the email addressed to a specific individual or a general mailbox?




5. Did the email contain any attachments or links?






6. How quickly did you need to respond to the email?






7. Have you verified the authenticity of the email through other means?





Key Takeaways

  • ✅ Be cautious of emails with generic greetings or unusual sender addresses, as they may be indicative of a Business Email Compromise (BEC) attempt. These red flags can help you identify potential threats.
  • ✅ Verify the authenticity of emails that request sensitive information or transactions, especially if they create a sense of urgency. This can help prevent BEC attacks.
  • ✅ Check for spelling and grammar mistakes, as well as unusual language or tone, which can be signs of a BEC attempt. Legitimate emails usually have proper grammar and spelling.
  • ✅ Be wary of emails that request changes to payment or banking information, as this is a common tactic used by BEC scammers. Always verify such requests through other channels.
  • ✅ Implement a verification process for email requests, such as contacting the sender through a phone call or a separate email thread. This can help prevent BEC attacks.
  • ✅ Educate clients and employees on BEC warning signs and best practices to prevent attacks. This can help reduce the risk of a successful BEC attempt.
  • ✅ Have a response plan in place in case of a suspected BEC attack, including reporting the incident to the relevant authorities and taking steps to mitigate potential damage. A well-prepared response can minimize the impact of an attack.

The Anatomy of a BEC Attack: What You Need to Know to Protect Your Business

What is Business Email Compromise (BEC)?

Business Email Compromise (BEC) is a type of cyber attack where hackers target businesses through email. They often impersonate a high-level executive or vendor to trick employees into divulging sensitive information or transferring funds.

How Does BEC Happen?

BEC attacks typically start with a phishing email or a compromised email account. Hackers gather information about the company and its employees to create convincing emails. They may also use social engineering tactics to create a sense of urgency.

Warning Signs of a BEC Attack

Some common warning signs of a BEC attack include:

  • Unusual or suspicious email requests
  • Emails with misspelled domain names or generic greetings
  • Requests for sensitive information or wire transfers
  • Emails that create a sense of urgency

Types of BEC Attacks

There are several types of BEC attacks, including:

  • CEO Fraud: Hackers impersonate the CEO or other high-level executives
  • Invoice Scams: Hackers send fake invoices to trick businesses into paying
  • Account Takeover: Hackers compromise an employee’s email account to gain access to sensitive information

Comparison of BEC Attack Types

Attack Type Description Goal
CEO Fraud Hackers impersonate the CEO or other high-level executives Trick employees into divulging sensitive information or transferring funds
Invoice Scams Hackers send fake invoices to trick businesses into paying Obtain payment for fake invoices
Account Takeover Hackers compromise an employee’s email account Gain access to sensitive information

Pro Tips for Preventing BEC Attacks

Verify Email Requests: Verify the authenticity of email requests, especially those that ask for sensitive information or wire transfers.

Use Multi-Factor Authentication: Use multi-factor authentication to add an extra layer of security to your email accounts.

What to Do If You Suspect a BEC Attack

If you suspect a BEC attack, contact your IT department or cybersecurity team immediately. They can help you verify the authenticity of the email and take steps to prevent further attacks.

Reporting BEC Attacks

Report BEC attacks to the FBI’s Internet Crime Complaint Center (IC3) and the Federal Trade Commission (FTC). You can also report attacks to your email provider or internet service provider.

Learn More About BEC Attacks

For more information on BEC attacks, check out these resources:

Template for Notifying Clients About Suspicious Emails

Here is a template you can use to notify clients about suspicious emails:

Subject: Notification of Suspicious Email Activity

Dear [Client],

We wanted to notify you that we have received reports of suspicious email activity. We take the security of our email accounts seriously and are taking steps to prevent further attacks.

If you receive an email that asks for sensitive information or wire transfers, please verify the authenticity of the email by contacting us directly.

Thank you for your cooperation and understanding.

Best regards,
[Your Name]

Responding to Suspicious Emails: Templates and Examples to Keep You Safe

Here are three templates to help you respond to suspicious emails and protect your inbox from Business Email Compromise (BEC) attacks:

Template 1: Request for Verification of Email

Scenario: You receive an email that appears to be from a colleague or manager, but the tone or request seems unusual.

<template>
Dear [Name],

I received an email from you/1 that seems unusual. To verify, could you please confirm if you sent it?

Best,
[Your Name]
</template>

Why it works: This template is effective because it doesn’t accuse the recipient of being a threat, but rather seeks verification of the email. This approach allows you to confirm the legitimacy of the email without putting the recipient on the defensive.

Template 2: Notification of Potential Phishing Attempt

Scenario: You receive an email that appears to be from a vendor or supplier, but the email contains suspicious links or attachments.

<template>
Dear [Vendor/Supplier],

I received an email from you/2 that appears to be a phishing attempt. I'm concerned that it may be a scam. Could you please verify the authenticity of the email and advise on next steps?

Best,
[Your Name]
</template>

Why it works: This template is effective because it clearly states your concerns and asks the vendor/supplier to verify the email. This approach helps to prevent further phishing attempts and keeps your inbox safe.

Template 3: Escalation to IT/Security Team

Scenario: You receive an email that appears to be a BEC attack, and you need to escalate it to your IT/security team.

<template>
Subject: Suspicious Email - Potential BEC Attack

Dear [IT/Security Team],

I've received an email/3 that appears to be a Business Email Compromise (BEC) attack. The email is [insert details]. I recommend that we investigate this further and take necessary precautions.

Best,
[Your Name]
</template>

Why it works: This template is effective because it clearly states the nature of the threat and escalates it to the relevant team. This approach ensures that the threat is taken seriously and addressed promptly, minimizing potential damage.

Don’t Fall for These Common BEC Scams: Red Flags to Watch Out For

WHAT TO AVOID

Be cautious of the following common mistakes that can lead to Business Email Compromise (BEC) scams:

  • Urgency or Scare Tactics: Scammers often create a sense of urgency to prompt action.

    Why it’s problematic: This tactic aims to bypass your critical thinking and make you act impulsively.

    How to fix: Verify the authenticity of the email by contacting the sender directly, and never rush into making financial decisions based on an email.

  • Generic Greetings: BEC scammers often use generic greetings instead of personalized ones.

    Why it’s problematic: Legitimate emails from known clients or partners usually address you by name.

    How to fix: Be wary of emails with generic greetings like “Dear Customer” or “Hello Team,” and verify the sender’s identity.

  • Spelling and Grammar Mistakes: Scammers may make errors in their emails.

    Why it’s problematic: Legitimate businesses usually have professional email templates and proofreading processes.

    How to fix: Look out for spelling and grammar mistakes, and be cautious of emails that seem unpolished.

  • Suspicious Links or Attachments: Scammers often include malicious links or attachments.

    Why it’s problematic: These can lead to phishing sites or install malware on your device.

    How to fix: Avoid clicking on suspicious links or downloading attachments from unknown senders, and use antivirus software to scan emails.

  • Unusual Payment Requests: Scammers often request unusual payment methods.

    Why it’s problematic: Legitimate businesses usually have standard payment procedures.

    How to fix: Verify payment requests with the sender directly, and be cautious of requests for wire transfers or cryptocurrency.

  • Lack of Personalization: BEC scammers often lack personalization in their emails.

    Why it’s problematic: Legitimate emails from known clients or partners usually reference specific projects or previous interactions.

    How to fix: Be wary of emails that lack personalization, and verify the sender’s identity.

  • Fake Sense of Familiarity: Scammers may pretend to be someone you trust.

    Why it’s problematic: This tactic aims to gain your trust and make you more likely to comply with their requests.

    How to fix: Verify the authenticity of the email by contacting the sender directly, and be cautious of emails that seem too familiar.

  • No Clear Purpose: BEC scammers often have unclear or vague purposes.

    Why it’s problematic: Legitimate emails usually have a clear purpose or call to action.

    How to fix: Be wary of emails with unclear purposes, and verify the sender’s identity and intentions.

Take Action Now: A 5-Step Checklist to Mitigate BEC Risks

Before You Start

  • ✅ Verify the sender’s email address to ensure it’s legitimate and not spoofed.
  • ✅ Check the email’s content for spelling and grammar mistakes, which are often indicative of phishing attempts.
  • ✅ Be cautious of urgent or threatening language, which can be a tactic to create a sense of panic.
  • ✅ Hover over links to see the URL and ensure it’s legitimate before clicking.

While Writing

  • ✅ Clearly state the purpose of the email and the action required from the client.
  • ✅ Provide a clear and direct way for the client to verify the authenticity of the email.
  • ✅ Include a specific example of a BEC warning sign to educate the client.
  • ✅ Ensure the tone is professional and polite, avoiding jargon and technical terms.

Before Sending

  • ✅ Double-check the recipient’s email address to ensure it’s correct.
  • ✅ Use a secure and verified method to send sensitive information.
  • ✅ Consider using a secondary verification method, such as a phone call or text message.
  • ✅ Keep a record of the email and any subsequent communication.

BEC Alert: Answering Your Top Questions About Business Email Compromise

What is Business Email Compromise (BEC)?

Answer: Business Email Compromise (BEC) is a type of cyber attack where scammers target businesses by impersonating a trusted individual or entity via email. The goal is to trick employees into divulging sensitive information, transferring funds, or performing other actions that compromise the business. BEC attacks often involve phishing, social engineering, and spoofing tactics. These attacks can result in significant financial losses and damage to a company’s reputation.

What are common warning signs of a BEC attack?

Answer: Common warning signs of a BEC attack include emails with misspelled or slightly altered sender addresses, requests for urgent or suspicious transactions, and emails that create a sense of panic or pressure to act quickly. Additionally, be cautious of emails that ask for sensitive information or request changes to payment or account information. Employees should also be wary of emails with unfamiliar tone or language.

What should I do if I receive a suspicious email?

Answer: If you receive a suspicious email, do not respond or take any action. Instead, report the email to your IT department or cybersecurity team immediately. They will assess the situation and provide guidance on next steps. If you’re unsure about the authenticity of an email, it’s always best to err on the side of caution and verify the sender’s identity through a separate communication channel.

What template can I use to warn clients about BEC?

Answer: When warning clients about BEC, it’s essential to be clear and concise. A sample template could include: “Dear [Client], We wanted to alert you to a recent increase in Business Email Compromise (BEC) attacks. Please be cautious of any emails requesting sensitive information or urgent transactions. Verify the authenticity of any suspicious emails with us directly. We’re here to help and protect your business.”

How can I prevent BEC attacks on my business?

Answer: To prevent BEC attacks, implement robust cybersecurity measures, such as multi-factor authentication, email encryption, and regular software updates. Educate employees on BEC warning signs and best practices for email security. Establish a clear protocol for reporting suspicious emails and verifying sender identities. Regularly review and update your security policies to stay ahead of emerging threats.

What are some best practices for email security?

Answer: Best practices for email security include using strong passwords, enabling two-factor authentication, and being cautious of links and attachments from unknown senders. Regularly update software and plugins, and use reputable antivirus software. Use encryption and secure email protocols to protect sensitive information. Finally, educate employees on email security best practices and the importance of verifying sender identities.

How can I report a BEC attack?

Answer: If you suspect a BEC attack, report it to your IT department or cybersecurity team immediately. You can also file a complaint with the FBI’s Internet Crime Complaint Center (IC3) or report it to the Anti-Phishing Working Group (APWG). Provide as much detail as possible about the attack, including email headers and any relevant communication.

What are the consequences of a BEC attack?

Answer: The consequences of a BEC attack can be severe, including significant financial losses, reputational damage, and compromised sensitive information. A BEC attack can also lead to data breaches, regulatory penalties, and loss of customer trust. In some cases, businesses may need to invest in costly recovery efforts, cybersecurity upgrades, and employee training to prevent future attacks.

How can I stay informed about BEC threats?

Answer: Stay informed about BEC threats by regularly visiting reputable cybersecurity resources, such as the FBI’s IC3 website or the Anti-Phishing Working Group (APWG) website. Subscribe to cybersecurity newsletters and follow industry leaders on social media to stay up-to-date on the latest threats and best practices. Attend cybersecurity conferences and training sessions to educate yourself and your team on BEC prevention and response.

About the Author

Jones – Senior Content Writer with over 8 years of experience in professional communication and business writing. She has helped thousands of professionals improve their writing skills through practical, actionable advice. Her expertise has been featured in leading career development publications.

Last updated: July 09, 2026

Stay Vigilant: The Ongoing Battle Against Business Email Compromise

As the threat of Business Email Compromise (BEC) continues to evolve, it’s essential to remain vigilant and proactive in protecting your inbox and that of your clients. In this guide, we’ve highlighted the warning signs of BEC and provided a template for what to send clients after a suspicious email.

To recap, the key points to take away are:

* Be cautious of emails that create a sense of urgency or use spoofed sender addresses
* Verify the authenticity of requests, especially those involving financial transactions
* Educate employees on BEC warning signs and best practices for email security
* Implement robust email security measures, such as two-factor authentication and encryption

To next steps, we recommend:

* Conducting regular email security audits to identify vulnerabilities
* Developing a comprehensive email security policy
* Providing ongoing training and education for employees on BEC and email security best practices

Don’t wait until it’s too late. Take action today to protect your business and that of your clients from the devastating effects of BEC.

Take the first step towards a more secure inbox by:

* Reviewing and updating your email security policies and procedures
* Sharing this guide with your clients and colleagues to help them stay informed
* Contacting us to learn more about our email security solutions and services.

Stay informed. Stay vigilant. Stay secure.