How did Atomic get hacked?

Could you please elaborate on the circumstances surrounding the hacking of Atomic? I'm keen to understand the specifics of the attack, including any vulnerabilities that were exploited and the steps taken by the hackers to gain unauthorized access. Additionally, I'm interested in knowing if there were any warning signs or security measures that could have been implemented to prevent such an incident. Could you also discuss the impact of the hack on Atomic's operations and the measures being taken to restore services and protect against future attacks? I'm particularly curious about the lessons learned from this incident and how they can be applied to enhance the overall security of the cryptocurrency industry.