US indicts UK resident 'PlugwalkJoe' for cryptocurrency theft

US prosecutors have indicted a UK national for allegedly conducting a SIM-swapping scheme resulting in the theft of cryptocurrency.

On Wednesday, the US Department of Justice (DoJ) named Joseph O’Connor, also known as “PlugwalkJoe,” as the subject of the indictment. Prosecutors claim that O’Connor and his co-conspirators plotted to steal $784,000 in cryptocurrency from an unnamed crypto exchange, based in Manhatten. 

At the time, the firm “provided wallet infrastructure and related software to cryptocurrency exchanges around the world,” the DoJ says. 

According to the indictment (.PDF), O’Connor conducted SIM-swapping attacks to target the executives of the company. 

SIM-swapping uses social engineering techniques — including the impersonation of an intended victim, or, in some cases, hiring internal help — to have a phone number transferred to a handset controlled by an attacker. 

In this often short window, the victim can no longer receive calls or texts. Instead, calls and messages are rerouted to another device outside of their control. 

Cybercriminals can then grab two-factor authentication (2FA) codes and account details, granting them access to financial services and cryptocurrency wallets linked to the compromised phone number. 

US law enforcement says that between roughly March and May in 2019, O’Connor and others

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