North Korea’s Lazarus Group is responsible for multiple cyberattacks against Japanese blockchain firms over the last several years, according to Japanese law enforcement.

In a press release, authorities said they see overlap between the tactics used in a string of attacks against Japanese companies and those that Lazarus has employed elsewhere, such as targeted spear-phishing. 

“It has been concluded that Lazarus, a subordinate organization of the North Korean government, carried out cyber attacks against crypto-asset-related businesses,” Japan’s National Public Safety Commission said Friday.

According to the press release, attackers mainly used