From Enron to FTX: seven major scams exposed

August 13, 2025

Fraud has existed for as long as trade and money itself, but its methods have transformed dramatically over time.

According to AIPrise, once limited to small-scale schemes such as ancient coin shaving, scams today can cause losses in the billions, exploiting increasingly complex systems in finance, crypto, and e-commerce. As technology has advanced, so too has the sophistication of fraudsters, making robust prevention strategies essential.

Some of the most notorious cases in history have left deep scars on industries, economies, and public trust. From historical bubbles to corporate collapses, these scandals share one core element: the exploitation of trust for personal gain. Learning from these episodes is crucial for businesses looking to safeguard themselves in an era where fraud can spread globally in seconds.

One of the most infamous examples is the collapse of Enron in 2001. The energy giant’s rapid rise masked deceptive accounting practices, such as “mark-to-market” reporting, which inflated profits and concealed debt through special purpose entities. When the truth emerged, Enron’s share price plunged from $90 to under $1, wiping out billions in shareholder value and costing thousands their jobs and pensions. The scandal destroyed its auditor, Arthur Andersen, and led to sweeping regulatory changes under the Sarbanes-Oxley Act.

Bernie Madoff’s Ponzi scheme was even larger in scale, swindling investors out of an estimated $50bn. Operating for decades under a reputation for consistent returns, Madoff used new investments to pay earlier clients, deceiving wealthy individuals, charities, and institutions. The exposure of the fraud in 2008 revealed severe regulatory failings and a lack of due diligence by investors.

Corporate deceit has not been confined to finance. In 2015, Volkswagen admitted to installing software in over 11m vehicles to cheat emissions tests. The scandal led to more than $30bn in costs, stricter global regulations, and lasting damage to consumer trust.

Silicon Valley also had its high-profile deception with Theranos. The start-up promised revolutionary blood testing technology but delivered false results to patients and misled investors about its capabilities. Founder Elizabeth Holmes and senior executives faced legal action, and the case became a cautionary tale about unchecked hype in tech innovation.

Fraud has also emerged in the fast-moving world of cryptocurrency. In 2014, Mt. Gox, then the largest Bitcoin exchange, collapsed after losing 850,000 Bitcoins worth $450m at the time. Poor controls and mismanagement left investors with huge losses. More recently, the 2022 collapse of FTX, once valued at $32bn, exposed risky practices and overreliance on self-created tokens with little intrinsic value, leading to its bankruptcy within days of revelations about its finances.

Historical examples are equally stark. The South Sea Bubble of the early 1700s saw share prices in the South Sea Company soar on promises of trade riches, before collapsing and leaving widespread financial ruin. Even renowned figures like Isaac Newton suffered major losses.

Across centuries, the lesson is the same: whether it’s 18th-century speculation or 21st-century crypto, fraud thrives where oversight is weak and promises go unquestioned. Strong governance, transparent reporting, and a culture of ethical leadership remain the most effective safeguards. As threats evolve, so must prevention strategies—combining regulatory frameworks, advanced technology, and constant vigilance to stay ahead of the fraudsters.