A group of hackers have been arrested in South Korea for spreading cryptojacking malware across thousands of computers. CCN reports that the five men sent out the programs via email, between October and December 2017.
The hackers were led by 24-year-old Kim Amu-gae. They sent a total of 32,435 emails posing as job applications, with an attatched resume that was in fact a program. The malware was designed to mine Monero using the victim's computer processing power, and it successfully installed in over 6000 computers.
Despite the scale of the attack, they were only capable of generating around $1,000 in profit. According to a statement from local police and the National Police Agency's Cyber Security Bureau, "Security vendors quickly responded to the spread of malicious code, and revenue was not very high. Most of the cases were detected by (anti-virus software) after mining for 3-7 days. When it was detected, it sent another malicious code again, but soon it was detected again by the (anti-virus software)".