By Allianz Trade editorial team - Published on 29 April 2026
Social engineering-related fraud - such as CEO fraud, payment diversion and fake buyer fraud - can cause significant financial and operational damage, even in well-managed companies. This article outlines the main types of social engineering-related fraud and provides practical measures to detect, prevent and financially protect your business against these attacks.
How to protect your business against CEO fraud, payment diversion and fake buyer fraud
Summary
Key takeaways
- CEO fraud, payment diversion and fake buyer fraud often share the same red flags: unusual urgency, bypassing normal checks, confidentiality requests, sudden bank detail changes, and atypical orders or payment destinations.
- Risk is reduced by strong approval processes, robust sales and credit controls, targeted training, and supportive technology (email security, MFA, payment monitoring).
- Because sophisticated fraud can still succeed, Business Fraud Insurance acts as a financial safety net, helping stabilize cash flow and turn major fraud losses into more manageable events.
Would you like to discover more about our Business Fraud Solutions?
Learn more and contact us for personalized advice and a price estimate for your company!
Several tactics, one goal: manipulating human trust
Modern fraud increasingly targets people rather than systems. Criminals use social engineering tactics to manipulate trusted employees into making decisions they would normally avoid - such as approving urgent payments, changing bank details, or releasing goods on credit.
In this article, we look at three common examples of social engineering-related fraud that many companies face:
- CEO fraud (fake president fraud): attackers impersonate senior executives (e.g. CEO, CFO) to pressure staff into making confidential, urgent payments or changing bank details “just this once”.
- Payment diversion (invoice / mandate fraud): fraudsters pose as legitimate suppliers or partners and request “updated” bank details so real invoices are paid to their own accounts.
- Fake buyer fraud: criminals pretend to be genuine customers or well‑known brands, place large orders on credit and disappear with the goods, disappear with the goods without paying.
These schemes may look different on the surface, but they all rely on the same lever: manipulating human trust and routine processes. The next sections show how to recognise early warning signs, strengthen your controls and support your teams - and why many companies also rely on financial protection to limit the impact when fraud succeeds despite their precautions.
Warning signs: red flags in human approvals
Although these schemes can be sophisticated, many share similar red flags. Employees should pause and verify when they encounter:
- Unusual urgency: “This must be done today”, “No time for standard process.”
- Requests to bypass normal checks: “Just this once”, “We’ll fix the paperwork later.”
- Confidentiality instructions: “Do not talk to anyone else about this”, “Only between us.”
- Changes to bank details: Especially when combined with urgency or a large payment.
- Slight differences in email addresses or domains: An extra letter, a different spelling, or a different top‑level domain.
- Unusual payment destinations: New banks, new countries, or accounts in names that do not clearly match the counterparty.
- Large or atypical orders from “known” customers: Especially when coming from new email addresses or with unusual delivery locations.
How to reduce the risk of CEO fraud, payment diversion and fake buyer fraud
1 Strengthen your payment approval process
- Apply the four‑eyes principle for:
- High‑value payments,
- New beneficiaries,
- Any change to existing bank details. - Set clear approval thresholds and ensure they cannot be overridden by a single person.
- Require independent verification for:
- Supplier or customer bank detail changes,
- Unusual or urgent transfers to new accounts.
Independent verification means using a trusted channel, such as calling a known phone number from your internal records rather than relying on contact details in an email.
2 Treat bank detail changes as high‑risk
- Establish a policy: no bank details are changed without a second check.
- Verify changes by speaking directly with your known contact or using a separate communication channel.
- Maintain a central, controlled list of validated bank accounts and update it only through formal and secured procedures.
3 Protect your sales and credit processes
- For large or unusual orders on credit, especially from new domains or contacts:
- Check the customer’s email domain and contact details carefully.
- Confirm with your established contact at the customer if the order references a familiar name.
- Be cautious of new delivery addresses that differ from the usual ones.
- Apply credit checks and internal approvals consistently, even when dealing with recognized brand names.
4 Train the people closest to approvals
- Focus training on roles most exposed to social engineering:
- Finance, accounting, and treasury,
- Procurement and supply chain,
- Sales and credit management,
- Executive assistants. - Use concrete case studies CEO fraud, payment diversion, fake buyer fraud, BEC cases so employees see how these situations arise in real life.
- Encourage a “stop and check” culture:
- Make it clear that questioning unusual instructions is expected and supported.
- Assure staff that taking time to verify is valued more than reacting quickly without checks.
5 Support your people with technology
- Implement email security that:
- Flags external senders,
- Warns about lookalike domains and display‑name spoofing,
- Helps detect phishing and compromised accounts. - Use multi‑factor authentication for email and critical systems.
- Monitor for:
- New beneficiaries or frequent changes to bank details,
- Payments that fall outside normal patterns (amounts, timing, destinations). - Regular phishing simulations and internal exercises can help maintain awareness and identify process weaknesses.
Why internal controls and protection, although essential, don’t guarantee immunity
Even with robust processes, well‑trained staff, and advanced technology, there are limits:
- A very convincing email or phone call can still deceive experienced employees.
- People make mistakes when stressed, tired, or under time pressure.
- Fraudsters continually refine their methods and adopt new tools, including AI, to appear more authentic and discover new ways to commit fraud.
When fraud succeeds, the consequences can be severe:
- Significant sums transferred and unrecoverable,
- Goods shipped that will never be paid for,
- Contractual penalties from suppliers or customers,
- Investigation and legal costs,
- Damage to relationships and reputation,
- Pressure on cash flow and working capital.
For many companies, a single event can erase months of profit or derail planned investments.
Why companies use Business Fraud Insurance as a safety net
That’s why many businesses combine their internal controls, processes and tools with Business Fraud Insurance.
Business Fraud Insurance is designed to help protect your company against direct financial losses caused by insider fraud, as well as certain external threats, including many schemes driven by social engineering, such as:
- CEO fraud and fraudulent payment instructions.
- Payment diversion via manipulated bank details.
- Fake buyer fraud leading to unpaid goods.
By transferring part of the financial risk, you can:
- Help stabilize your cash flow after an incident,
- Help prevent a single fraud case from triggering a broader liquidity or solvency issue,
- Turn a potentially devastating loss into a more manageable financial event.
Business Fraud Insurance does not replace your internal controls, processes or tools. It complements them, providing an critical layer of protection when a sophisticated fraud succeeds despite your precautions. Business Fraud Insurance also helps address specific gaps in other insurance products, such as cyber insurance, which often exclude or limit coverage for social engineering.
Conclusion: From unavoidable human risk to manageable impact
CEO fraud, payment diversion, fake buyer fraud, and wider BEC schemes show how easily social engineering can exploit the human element in even well‑run companies. As long as people make decisions and approve payments, fraudsters will try to manipulate them.
You can:
- Strengthen your approval workflows,
- Train your teams and build a healthy questioning culture,
- Invest in email security and monitoring.
But since the risk cannot be fully eliminated, many companies build comprehensive resilience by combining strong prevention measures with financial protection through Business Fraud Insurance.
To find out how Allianz Trade’s Business Fraud Insurance can help protect your company from the financial impact of CEO fraud, payment diversion, fake buyer fraud, and other forms of business fraud and economic crimes, please visit our product page and contact our local team.
Would you like to discover more about our business fraud solutions?
Learn more and contact us for personalized advice and a price estimate for your company!
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