The landscape of cybersecurity is undergoing a seismic shift, driven by the rapid evolution of artificial intelligence. Zero-day vulnerabilities—the gaps in software that hackers exploit before developers can patch them—have long been the gold standard for attackers. But with AI tools like those behind check the site, the game has changed. These systems don’t just detect flaws; they predict them, automate responses, and even simulate attacks to preemptively neutralise threats before they’re weaponised. The question isn’t whether AI will replace human analysts, but how quickly the industry can adapt—or how many organisations will be left behind. The stakes are higher.