Olympian CJ Ujah Charged in Crypto Seed-Phrase Fraud

British Olympic sprinter CJ Ujah appeared alongside nine co-defendants at Chelmsford Crown Court on May 28 over an organised cryptocurrency fraud scheme, according to reports from the hearing. Prosecutors allege Ujah was part of a group that used phone calls impersonating police officers and cryptocurrency company representatives to trick victims into revealing their wallet seed phrases. Once obtained, the phrases were used to drain digital assets. In one case, a victim lost $403,500 (£300,000).

Ujah, 32, became the fifth Briton to break 10 seconds in the 100 metres in 2013 and won a silver medal in the 4×100-metre relay at the Tokyo Olympics. That medal was stripped after he tested positive for banned substances. He has not competed since April 2025. The court appearance adds a criminal dimension to a career already marked by anti-doping controversy. Four defendants were remanded into custody; Ujah and five others were released on bail. All ten are due back in court on July 24.

The Ujah Case: A Celebrity-Linked Crypto Fraud Ring

The charges centre on membership in an organised crime group running a fraudulent cryptocurrency scheme. Ujah also faces potential charges of being concerned in the supply of cannabis. The group allegedly operated for months, contacting victims by phone and posing as law enforcement or exchange support staff. The goal was always the same: extract the 12- or 24-word seed phrase that controls a crypto wallet.

The Scale of the Operation

Prosecutors named ten individuals in the indictment. The single disclosed victim loss of $403,500 is likely one of many. Fraud rings using social engineering to drain wallets have become a recurring problem in the UK and globally. The involvement of a known athlete draws attention to a threat that often remains underreported.

The Scam Mechanism: Why Seed Phrases Are a Single Point of Failure

The attack vector is simple but effective. Victims receive a call that appears to come from a legitimate number – a technique called caller ID spoofing. The caller claims to be a police officer investigating fraud on the victim’s account, or a crypto exchange representative warning of a security breach. The victim is told to “verify” their wallet by reading out the seed phrase. Once handed over, the attacker transfers all assets to wallets they control.

How Impersonation Calls Work

• The caller uses personal details obtained from data breaches to sound credible.
• Pressure tactics include threats of account freezing or legal action.
• Victims are instructed not to tell anyone, isolating them from advice.

Why $403,500 Is Just One Example

That figure represents only a single victim tied to this specific indictment. UK police have warned that crypto fraud losses have grown substantially in recent years, with seed-phrase phishing accounting for a growing share. The Action Fraud unit has repeatedly stated that no legitimate entity – police, exchange, or regulator – will ever ask for a seed phrase.

The Regulatory Angle: Fraud Cases Are Reshaping Crypto Narrative