The greatest defensive challenge that Las Vegas faced was never-before-seen attacks, which cyber-criminals now launch on a daily basis. Traditional security tools work by using fixed rules and signatures to predefine what a threat looks like, preventing them from spotting threats that look unlike anything seen before. From spear phishing emails meant to deceive the city’s employees by posing as trusted contacts, to novel attacks that attempt to infiltrate via the city’s multi-cloud environment, Las Vegas sought a funda-mentally unique security tool capable of keeping pace with an ever-evolving threat landscape. To fight back against automated attacks in real time, the city deployed Darktrace Antigena, the first cyber AI response tool that autonomously neutralizes threats by taking intelligent, surgical actions. Antigena works by confining infected devices to their typical ‘pattern of life’ within two seconds, containing significant threats without disrupting core municipal operations. These operations today rely heavily on Las Vegas’ multi-cloud archi-tecture, which includes Amazon Web Services, Microsoft Azure, and Office 365. Whereas the conventional, stove-pipe approach to securing these services lacks vital context, Darktrace analyzes data flows from across the city’s entire digital infrastructure, enabling Antigena’s cyber AI response to neutralize attacks wherever they originate.