Great frauds in history: crypto-queen Ruja Ignatova and her “bitcoin killer”
Ruja Ignatova convinced punters to put up to $12bn into her worthless "OneCoin" cryptocurrency – then disappeared with the loot.

Ruja Ignatova was born in Sofia, Bulgaria in 1980, before moving to Germany with her family when she was ten. In 2005 she was awarded a doctorate in law from the University of Konstanz. She went on to work for management consultancy McKinsey & Co in their eastern European office. In 2014 Ignatova set up OneCoin, which she claimed was a cryptocurrency that would become a “bitcoin killer”, and began promoting the currency at large public conferences around the world, including one at Wembley Stadium.
What was the scam?
Ignatova invited investors to buy “packages” that would give the owner tokens that could be used to “mine” OneCoin. The price of OneCoin was displayed on a website. Although this website showed the currency soaring in value from £0.43 in January 2015 to over £25 in 2019, this wasn’t based on any real transactions, but solely determined by the people running OneCoin. Ownership of the currency was stored on an ordinary database, rather than the blockchain (digital ledger) underpinning other digital currencies. Those who wanted to withdraw their money were paid out of money flowing in – in other words, it was in effect a Ponzi scheme.
What happened next?
Almost immediately after it began, OneCoin generated controversy with regulators around the world, who warned it could be a scam. Despite this, Ignatova’s charisma continued to lure in large amounts of money. Some likened the organisation to a cult. It was not until she mysteriously disappeared in 2017, just before she was due to give a talk, that the scheme started to unravel. Ignatova is still wanted by the US Department of Justice. Her brother Konstantin was convicted of fraud and money laundering last year, along with a number of other people connected to the scheme.
Subscribe to MoneyWeek
Subscribe to MoneyWeek today and get your first six magazine issues absolutely FREE

Sign up to Money Morning
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
Lessons for investors
Overall, the US authorities estimate that, between 2014 and 2017, OneCoin took in at least $4bn of investors’ money; some believe the final amount could be as much as $12bn.Investors are unlikely to get much of it back. One big red flag was the use of multi-level marketing techniques, where investors were encouraged to recruit friends and family into the scheme by giving them a small commission based on the additional money that was invested. Many of these commission payments were reinvested in OneCoin.
Sign up for MoneyWeek's newsletters
Get the latest financial news, insights and expert analysis from our award-winning MoneyWeek team, to help you understand what really matters when it comes to your finances.
Matthew graduated from the University of Durham in 2004; he then gained an MSc, followed by a PhD at the London School of Economics.
He has previously written for a wide range of publications, including the Guardian and the Economist, and also helped to run a newsletter on terrorism. He has spent time at Lehman Brothers, Citigroup and the consultancy Lombard Street Research.
Matthew is the author of Superinvestors: Lessons from the greatest investors in history, published by Harriman House, which has been translated into several languages. His second book, Investing Explained: The Accessible Guide to Building an Investment Portfolio, is published by Kogan Page.
As senior writer, he writes the shares and politics & economics pages, as well as weekly Blowing It and Great Frauds in History columns He also writes a fortnightly reviews page and trading tips, as well as regular cover stories and multi-page investment focus features.
Follow Matthew on Twitter: @DrMatthewPartri
-
Renewable investing: who is paying for the green revolution?
Investors in renewables have not been rewarded, says Bruce Packard. Will they fund the government’s plans?
By Bruce Packard Published
-
UK house prices rose 4.6% last year – where did property prices grow most?
House prices increased by 4.6% in 2024, giving an average property price of £268,000. Where did property prices grow the most and will they continue to rise this year?
By Ruth Emery Published
-
Deepseek's Liang Wenfeng: the maths whizz who shook Big Tech
Few people had heard of Liang Wenfeng until the launch of his DeepSeek AI chatbot wiped a trillion dollars off US technology stocks. His pivot to AI was of a piece with his past exploits.
By Jane Lewis Published
-
Donald Trump's tariffs spark a global game of thrones
We don’t know what Donald Trump intends or will do next. That is in itself damaging.
By Emily Hohler Published
-
RedNote: the rise of the new TikTok
RedNote, a Chinese rival to social-media app TikTok, has seen millions of US users flock to it in the wake of the US TikTok ban. That caught the company by surprise. What is RedNote and can its popularity last?
By Jane Lewis Published
-
Australian tycoon Andrew Forrest battles it out with oil giant ExxonMobil
Iron ore billionaire Andrew Forrest made billions before committing himself to philanthropy. Now he is preparing for a showdown with ExxonMobil.
By Jane Lewis Published
-
Remembering Sir David McMurtry: Renishaw founder and Concorde engineer
Sir David McMurtry, co-founder of Renishaw, made a unique contribution to Britain. We look back at his legacy
By Jamie Ward Published
-
Low Tuck Kwong: the Indonesian mining billionaire who is benefitting from coal boom
Low Tuck Kwong’s coal business was in deep trouble a decade ago with no future. Now, he is riding the waves of a global coal boom
By Jane Lewis Published
-
David Montgomery's potential new ally as he seeks to buy The Telegraph
Veteran media mogul David Montgomery has seen off a bid for his media group National World. But he now has his eye on The Telegraph
By Jane Lewis Published
-
Elon Musk to Taylor Swift - the four key figures who moved markets in 2024
We look at the four most influential people in 2024 who moved markets – from Elon Musk reshaping US politics to Rachel Reeves struggling as Britain's chancellor
By Jane Lewis Published