1) A global ransomware attack called WannaCry spread to over 150 countries using hacking tools stolen from the NSA. It exploited a Windows vulnerability that Microsoft had already released a patch for. 2) The attack was well-coordinated and planned to spread quickly by searching for vulnerable systems within networks. Once it infected one system, it could spread laterally across the network. 3) Future attacks are expected to be even more sophisticated as hackers adapt their techniques. Companies need to ensure timely patching of systems and careful management of supply chain security to avoid falling victim.