A major cyberattack linked to North Korea has exposed vulnerabilities in the U.S. digital infrastructure, following a reported breach affecting systems tied to Lockheed Martin and thousands of companies. Hackers reportedly exploited a widely used software supply chain, inserting malicious updates to gain access to sensitive data and financial systems. As warnings intensify from U.S. agencies like the Federal Bureau of Investigation, the incident raises serious concerns about cybersecurity, espionage, and the growing role of cyber warfare in global conflicts.