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Invoice Fraud: What Is It and How to Prevent It?

Invoice Fraud: What Is It and How to Prevent It?

Invoice fraud costs businesses billions. Prevent it with strict payment verifications, secure email practices, and advanced accounts payable software solutions.

In 2021, invoice scams cost companies over $2.4 billion. This shows how big a problem invoice fraud is today. It's when scammers trick companies into paying them money they don't owe. This can hurt a company's finances, damage relationships with suppliers, and harm its reputation.

Businesses need to fight back against this threat. They must protect their money and keep their reputation strong.

Companies are using new tools to fight fraud. They are using software to help with accounts payable. This is because scammers are getting smarter, using tricks to get into company emails and steal money.

Key Takeaways

  • Invoice fraud can lead to substantial financial losses, damaged vendor relationships, and reputational damage for businesses.
  • Attackers are using increasingly sophisticated tactics, such as targeted social engineering and business email compromise (BEC) scams, to orchestrate invoice fraud.
  • Implementing robust verification processes, security awareness training, and advanced email security solutions can help organizations mitigate the risk of invoice fraud.
  • Prompt action and reporting of suspicious invoices are help in the recovering of payments and preventing further losses.
  • Automating accounts payable processes and regularly communicating with suppliers can enhance fraud detection and prevention efforts.

What Is an Invoice Fraud?

Invoice fraud is when someone sends fake bills to a company. They might say a vendor's contact or payment details have changed. This trick uses trust and established processes in an organization's accounts payable system.

These scams can be simple, like changing amounts on real invoices. Or they can be complex, with completely made-up invoices or fake vendors.

Invoice fraud, also known as mandate fraud, happens when a scammer pretends to be a supplier. They give new payment details. This can cause big financial losses for the business.

A Lithuanian man and his team scammed Google and Facebook out of $122 million. They used phishing and invoice fraud from 2013 to 2015.

In 2018, Save The Children lost about $1 million to fake invoices. These fake invoices, fraudulent billing, payment diversion, and vendor impersonation schemes can hurt companies of all sizes.

How Does Invoice Fraud Work?

Invoice fraud is a common scam used by cybercriminals against businesses. They pretend to be real suppliers or vendors. They use tricks to get employees to pay money to fake accounts. Knowing how invoice fraud works helps businesses stay safe from these scams.

1. Impersonation Scams

In impersonation scams, fraudsters pretend to be legitimate vendors or suppliers and send fabricated invoices to businesses. They often research their target to make their fake invoices as convincing as possible. This includes replicating the vendor's logo, formatting, and communication style. 

Businesses are tricked into believing these invoices are genuine and unknowingly transfer payments to the fraudsters' bank accounts instead of the real suppliers. These scams exploit trust and often target companies with high invoice volumes, where individual transactions may not be closely scrutinized.

2. Email Compromise

Email compromise involves hackers gaining unauthorized access to email accounts, often through phishing attacks or weak security measures. Once inside the system, they observe correspondence between a company and its vendors. Using this information, the fraudsters craft fraudulent invoices, mimicking real communication patterns and transaction details. 

They update the payment instructions to direct funds into their own accounts. Because these emails appear legitimate, employees are often unaware of the fraud until after the payment has been made.

3. Phishing Attacks

Phishing attacks aim to deceive employees into disclosing sensitive information, such as login credentials or financial system access. Fraudsters send emails that appear to come from trusted sources, urging recipients to click on malicious links or download harmful attachments. 

Once the attackers gain access, they can approve fraudulent invoices or divert payments. These scams are highly effective because they rely on social engineering tactics that exploit human error and urgency.

4. Duplicate or Inflated Invoices

In duplicate or inflated invoice scams, fraudsters submit fake invoices for goods or services that may appear legitimate but have already been paid. Alternatively, they inflate the amounts on invoices to siphon off extra funds. 

These scams are particularly effective in organizations that lack strict oversight or do not have automated systems to detect duplicate payments. Fraudsters rely on the assumption that busy accounts payable teams won’t notice the discrepancies.

5. False Supplier Changes

In these scams, fraudsters inform businesses of a supposed change in the payment details for a legitimate supplier. This notification is often sent via email or a phone call, appearing to come from the supplier. The message typically includes new bank account details, which belong to the scammer. 

Without proper verification, businesses unknowingly redirect payments meant for their supplier to the fraudster’s account. This method often targets companies with long-term vendor relationships, making the request seem routine and credible.

6. Front Companies

Fraudsters sometimes establish entirely fake companies and issue invoices for goods or services that were never provided. These invoices are sent to businesses with weak vendor verification processes, relying on the assumption that the organization will pay without questioning the legitimacy of the supplier. 

These fake companies often disappear once payments are received, leaving no trace for recovery. This type of scam thrives on organizations that do not thoroughly vet new vendors or cross-check the legitimacy of services rendered.

Type of Scam
Description
How It Works
Impersonation Scams
Fraudsters pose as vendors and send fake invoices.
They copy vendor details to trick payments to their account.
Email Compromise
Hackers access emails and send fake invoices.
They alter payment details to divert funds.
Phishing Attacks
Scammers trick employees into sharing sensitive info.
Fake emails lead to unauthorized payments or access.
Duplicate/Inflated Invoices
Fraudsters resubmit or overcharge on invoices.
They exploit weak oversight to siphon extra funds.
False Supplier Changes
Fake notifications claim supplier bank details changed.
Payments are redirected to scam accounts.
Front Companies
Fake companies send invoices for fake goods/services.
Fraudsters rely on poor vendor verification.

How to Protect Against Invoice Fraud?

Invoice fraud is a big problem for businesses, causing a lot of financial loss and disruption. To keep your business safe, you need strong internal controls and verification steps. When you are proactive, you can lower the chance of falling into these scams and keep your finances healthy.

Verify Payment Requests

Verify any changes in payment instructions or new invoice requests and contact suppliers directly through trusted communication channels. Avoid relying solely on email for confirmation, as this is a common target for fraudsters. Instead, use phone calls or in-person visits to validate the details. 

Cross-checking payment information with suppliers helps prevent funds from being diverted to fraudulent accounts and ensures that every payment is legitimate.

Implement Approval Processes

Establishing multiple layers of approval for high-value transactions or changes in vendor details is a strong defense against fraud. Require dual authorization from senior personnel for such changes, ensuring at least two sets of eyes review the request. 

This process creates accountability and reduces the likelihood of fraudulent invoices slipping through undetected, particularly in fast-paced or high-volume financial environments.

Regular Audits

Conducting routine financial audits is critical for spotting inconsistencies, duplicate payments, or suspicious activities. Audits provide an opportunity to review past transactions in detail and identify red flags that might have been overlooked. 

Regular checks also encourage employees to follow established protocols, knowing that financial activities are closely monitored, and deter potential internal fraud attempts.

Use Anti-Fraud Tools

Investing in anti-fraud software can significantly enhance your ability to detect and prevent fraudulent invoices. These tools can automatically flag duplicate payments, identify inconsistencies, and monitor payment activity for unusual patterns. 

Many solutions integrate seamlessly with accounting systems, providing real-time alerts and reducing the reliance on manual processes that are prone to human error.

Educate Employees

Employee training is one of the most effective ways to combat invoice fraud. Educate your team on recognizing phishing attempts, fake invoices, and other common scams. Regular workshops or seminars can keep staff updated on the latest fraud tactics and reinforce best practices. 

Empowered employees are less likely to fall victim to scams and more likely to identify suspicious activity before it becomes a problem.

how to protect against invoice fraud

How to Report a Fake Invoice?

If you think you got a fake invoice, act fast to avoid big financial losses. Here's how to report it and keep your business safe:

Report to Your Employer or Finance Department

If you suspect an invoice is fraudulent, the first step is to report it to your employer or finance department. Escalate the issue to your manager, accounts payable team, or any other relevant personnel within your organization. 

Ensure you provide all relevant details, such as a copy of the invoice, related emails, and any correspondence that might help establish the fraud. Prompt internal reporting ensures the issue is addressed swiftly and prevents further losses.

Notify the Supplier or Vendor

Contact the legitimate supplier or vendor directly using official contact details, not those provided in the suspicious communication. Confirm whether the invoice was issued by them and verify payment instructions. 

If fraud is confirmed, inform the supplier immediately so they can take necessary steps, such as alerting other clients or tightening their security measures to prevent future incidents.

Contact Your Bank

If a payment has been made, notify your bank as soon as possible. Banks often have fraud departments that can freeze transactions or potentially recover funds if action is taken quickly. 

Provide them with all the evidence related to the fraudulent activity, including copies of the invoice and any relevant emails or documentation.

Report to Local Authorities

File a report with your local police department to document the fraud formally. Include all relevant evidence, such as the fake invoice, emails, and any correspondence. In addition, report the incident to national fraud agencies where applicable. 

For example, in the United States, you can report to the Federal Trade Commission (FTC) or the FBI’s Internet Crime Complaint Center (IC3). In the United Kingdom, Action Fraud handles such cases, and in Australia, you can contact Scamwatch or the Australian Cyber Security Centre (ACSC). These agencies often provide resources and support for fraud victims.

Report to Cybercrime Units

If the fraud involves phishing or email hacking, report the incident to your country’s cybercrime unit. Provide technical details, such as email headers, IP addresses, and any suspicious links or attachments. Cybercrime units are equipped to investigate these specific types of fraud and can help identify and apprehend the perpetrators.

Alert Industry Peers

Notify industry groups or professional associations about the fraud to warn other businesses. Sharing details about the scam, such as the methods used and the fake invoice, helps others recognize and avoid similar threats. This collaborative approach strengthens overall industry resilience against fraud.

Use Online Reporting Platforms

Certain regions or organizations provide dedicated online platforms for reporting scams. For example, businesses in North America can report to the BBB Scam Tracker, while the UK has the National Cyber Security Centre (NCSC). These platforms collect information on fraud trends and provide guidance for victims, helping to combat fraudulent activity on a broader scale.

Monitor and Follow Up

After reporting the incident, keep track of the progress with the relevant authorities, your bank, or other involved parties. Follow up periodically to ensure the investigation is moving forward. 

Also, review your organization’s internal processes to identify any vulnerabilities that allowed the fraud to occur. Use the incident as an opportunity to implement stronger security measures and reduce the risk of future scams.

how to report a fake invoice

Example of an Invoice Fraud: How Sophisticated Scammers Operate

Recently, we, at DepositFix, encountered a shocking case of invoice fraud involving a fabricated email thread. Here's a simplified version of how the scam played out:

  1. Fabricated Email Thread: Scammers crafted an email thread that appeared to show our CEO, Denis Lunev, responding to a prior inquiry from a known contact. The thread looked convincing, complete with correct email addresses and a history of relevant-sounding exchanges.
  2. Fake Invoice: The fraudsters included an invoice that appeared to come from a trusted vendor, using realistic branding, formatting, and account details.
  3. Urgency Tactic: They emphasized urgency, stating that the payment was overdue and urging immediate action to avoid disruption of services.
  4. Payment Redirection: The payment instructions directed funds to a fraudulent bank account that mimicked the legitimate vendor's details.
example of invoice fraud

How We Help Prevent Invoice Fraud

At DepositFix, we understand how sophisticated invoice fraud can be, and we’re committed to supporting businesses in implementing security measures to reduce these risks. Some steps we recommend include:

  • Verification Processes: Always verify invoices with vendors directly, using previously established contact details.
  • Access Controls: Limit access to financial systems and ensure multi-step verification for significant payments.
  • Monitoring Tools: Utilize tools that flag unusual activity or changes in vendor payment details.

Let’s talk about how you can protect your business against invoice fraud. If you'd like to learn more, reach out for a quick consultation.

Conclusion

Invoice fraud is a big threat to all kinds of businesses. You should be able to know how to spot fraud, how to keep your systems safe, and how to protect your money. These steps help keep your business safe and build trust with your vendors.

With more advanced cyber-attacks and the use of third-party vendors, new risks have appeared. Weak security, old software, and unsecured emails make it easier for scammers. Also, insider help can lead to more fraud.

To keep your business safe, check any suspicious invoices and have strong approval steps. Also, conduct regular audits and use anti-fraud tools. Training your team to spot phishing scams can prevent big losses.

FAQs

How can I identify a fraudulent invoice?

Fraudulent invoices often have subtle clues, such as misspelled company names, inconsistent formatting, or slight variations in email addresses. Look out for invoices from unknown vendors, unexpected payment requests, or changes in payment details without prior notice. If anything seems unusual, verify with the supplier directly.

Can small businesses be targeted for invoice fraud?

Yes, small businesses are frequently targeted because they often have fewer resources for fraud detection and prevention. Fraudsters may assume smaller companies lack robust financial controls, making them easier targets.

Are online payment systems safer against invoice fraud?

Online payment systems with built-in fraud detection features can reduce the risk of invoice fraud. These systems often include tools to verify vendors, monitor unusual payment activity, and flag suspicious transactions. However, fraud can still occur if scammers bypass these measures.

How can businesses verify a supplier's authenticity?

To verify a supplier’s authenticity, check their business registration details, request references, and ensure their payment details match the official records. Always use verified contact information to communicate, and avoid relying solely on email for updates.

Can artificial intelligence (AI) help prevent invoice fraud?

Yes, AI-powered tools can analyze invoices, flag inconsistencies, and detect unusual patterns in real-time. These systems can also learn from past fraud attempts to improve their detection capabilities, providing an additional layer of security for businesses.

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