
Joseph James O’Connor, a 26-year-old British hacker, is recognized as the mastermind behind a high-profile social media hacking case that targeted several celebrities. As a result, O’Connor was ordered to return approximately £4.1 million worth of Bitcoin. He was arrested in Spain in 2021 and extradited to the United States, given the locations of the evidence and victims. In 2023, a US court convicted him of computer hacking, wire fraud, and extortion, sentencing him to five years in prison.
This case stands out as a major example exposing the vulnerabilities in crypto asset crime prevention and social media security. O’Connor and his co-conspirators combined advanced technical skills with social engineering tactics to successfully breach the accounts of some of the most influential people worldwide.
In July 2020, O’Connor and multiple accomplices executed a large-scale hacking operation on Platform X (formerly Twitter). Their targets included internationally renowned figures such as former US President Barack Obama, current President Joe Biden, and Amazon founder Jeff Bezos.
Once they took over these celebrity accounts, the hackers orchestrated a sophisticated Bitcoin scam targeting their followers. They posted fraudulent promises to "double any Bitcoin sent," deceiving many users into transferring crypto assets. This scheme resulted in the theft of more than $794,000 (over 100 million yen) in Bitcoin in a very short time.
The incident not only exposed weaknesses in social media platform security but also highlighted the risks stemming from the irreversibility of crypto asset transactions. Unlike traditional bank transfers, once Bitcoin is sent, it cannot be easily reversed, leaving most victims unable to recover their funds.
The UK Crown Prosecution Service (CPS) took strict legal action against O’Connor’s criminal conduct. During the extradition process, authorities froze O’Connor’s assets, and the CPS obtained a civil asset forfeiture order. This order covered multiple assets, including 42 Bitcoin, which are set aside for victim compensation.
The asset seizure process was carried out through international cooperation. O’Connor’s arrest in Spain and extradition to the US underscore the importance of global law enforcement collaboration in fighting cybercrime. Crypto asset crimes often cross borders, making coordinated investigations among countries’ law enforcement agencies essential.
A CPS spokesperson emphasized that this case sets a legal precedent for handling crimes involving crypto assets. The confiscated Bitcoin will be liquidated at market value, and victim compensation procedures are expected to move forward accordingly.
This case delivered valuable lessons to both social media platforms and the crypto asset industry. Social media companies have been compelled to reinforce account security and reevaluate internal management systems. The hack, reportedly executed through access to internal platform systems, reinforced the importance of employee authentication processes and access controls.
This incident also served as a critical warning to the crypto asset community. Cryptocurrencies like Bitcoin, due to their anonymity and irreversibility, are especially attractive to criminals. Users must remain vigilant against scams impersonating celebrities or official accounts, particularly those promising guaranteed returns or to "double your funds."
Moreover, this case has prompted law enforcement agencies to develop more advanced investigative methods for crypto asset crimes. Practices such as blockchain-based fund tracing and international cooperation for apprehending suspects are rapidly evolving. Increased transparency in crypto transactions now makes it harder for criminals to conceal illicit funds.
Ultimately, this incident reminded the public of the importance of digital security. Using two-factor authentication, creating strong passwords, and staying alert to phishing scams are essential steps for self-protection.
The 19-year-old British hacker used social engineering and unauthorized access techniques to compromise celebrity accounts, enabling access to their Bitcoin wallets and carrying out the theft. The charges included cybercrime, money laundering, and unauthorized access to protected computers.
Courts recognize crypto assets as legal property and may issue restitution orders to protect ownership rights. Despite their decentralized nature, asset tracking and legal recovery on the blockchain are possible through customized injunctions.
Implementing strong passwords, enabling two-factor authentication, changing passwords regularly, verifying receiving addresses, and using whitelist functions are all critical steps.
This case highlights the importance of enhancing wallet security and protecting user accounts. The theft of large amounts of Bitcoin due to security loopholes and poor management underscores the need for exchanges and users to implement multi-factor authentication, strict private key management, and regular security audits.
Blockchain analytics tools enable transaction tracking and collaboration with enforcement agencies to follow the flow of funds. Once illegal addresses are identified, the associated accounts and addresses are frozen.











