North Korean hackers attacked various cryptocurrency platforms at least seven times and stole nearly 400 million worth of digital currency, according to a report. The year 2021 has been a successful year for North Korean cybercriminals, according to blockchain research firm ChainAnalysis.
The North Korean hackers targeted primarily a centralized platform to mediate between companies and cryptocurrencies. North Korea has repeatedly denied involvement in such attacks.
"From 2020 to 2021, the number of hack attacks involving North Korea increased from four to seven, and the value of [digital currency] exploited by those hacks increased by 40 percent," Chenanellesis said in a report.
According to ChainAnalysis, the hackers used various methods to steal property from the target organization's "hot" wallet and send it to North Korean-controlled areas. Such methods included phishing, special software codes, and malware.