Mask Network founder Sui Yang reported a theft of $4 million from his personal cryptocurrency wallet, revealing vulnerabilities in the security of mobile wallets and self-custody

Sui Yang, the founder of Mask Network, reported a theft of more than $4 million from his personal cryptocurrency wallet on February 27. The theft occurred during a private meeting when his phone was left unattended. The funds were transferred to a new address and exchanged for 1,700 ETH. The incident highlights the risks of storing cryptocurrency on mobile devices, whose vulnerabilities increase in social situations. Yang is working with experts and law enforcement to investigate the incident, expressing concerns about the insufficient security of self-custody.