The report by Chainalysis found hacking activity that"ebbed and flowed" throughout the year, with"huge spikes" in March and October. October was the biggest single month ever for cryptocurrency hacking, with $775.7 million stolen in 32 separate attacks, the report said.
At the time, Chainalysis and other firms confirmed to Reuters that North Korean-related accounts had lost millions of dollars in value.North Korea-linked hackers such as those in the cybercriminal syndicate Lazarus Group have been by far the most prolific cryptocurrency hackers, stealing an estimated $1.7 billion worth of in multiple attacks last year, the report said.North Korea has denied allegations of hacking or other cyberattacks.
"It isn’t a stretch to say that cryptocurrency hacking is a sizable chunk of the nation’s economy," Chainalysis said.