[Investigation: North Korean Hackers Infiltrate 1,640 Companies Across 57 Countries, Hundreds of Organizations Severely Damaged] According to Wired, a security researcher who infiltrated a North Korean hacker group’s system for nearly two years has issued a warning, highlighting that their attack methods targeting individual employees and contractors are highly effective and have a wide-reaching impact, leading to breaches in numerous organizations worldwide. Greek cybersecurity researcher Vangelis Stykas stated that since gaining access to the North Korean system 22 months ago, evidence has been uncovered showing that 1,640 companies across 57 countries have been affected by North Korean hacking activities. Among them, approximately 700 to 800 affected organizations suffered 'highly destructive' intrusions.