For years I have been following crypto fraud cases, but Javier Biosca’s case remains one of the most disturbing I’ve seen. This kind of operator set up an entire fraudulent operation with the Algorithms Group that scammed more than 750 investors out of something like 500 million euros. What’s striking is that among his victims were judges, notaries, tax inspectors—people who are supposed to know more.

Biosca’s strategy was simple but effective: he promised returns of 20–25% per week. Yes, you read that right—per week. Then he lowered it to 10% to seem more credible. Some investors handed over their life savings, while others even gave him 20 million euros directly. The company was never registered with the Comisión Nacional del Mercado de Valores de España, nor did it have any authorization.

What’s strange about the whole matter is how everything ended. Javier Biosca was arrested in June 2021 for fraud and misappropriation. After being released on bail of 1 million euros, just three weeks later—in November 2022—he fell from the balcony of an apartment in Estepona while he was staying at a golf country villa. His lawyer, Emilia Zaballos, raised doubts about the circumstances, suggesting that criminal organizations linked to Biosca might be involved.

The National Police investigated, but they found no evidence of foul play at that time. So it was officially ruled an accident. But honestly, there are too many unanswered questions in this case. What is clear is that Biosca’s fraud and Algorithms Group left thousands of people ruined. A further reminder of why due diligence in crypto isn’t a suggestion—it’s an obligation.