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We need your consent to load this rte-player contentWe use rte-player to manage extra content that can set cookies on your device and collect data about your activity. Please review their details and accept them to load the content.Manage Preferences In 2017, the WannaCry ransomware attack wreaked havoc globally, leveraging a zero-day exploit in Microsoft's Windows operating system to rapidly spread and encrypt data on infected computers. The Capital One data breach in 2019 exposed the personal information of millions of customers due to a zero-day vulnerability in a web application firewall.
In the early days of computing, vulnerabilities were often discovered serendipitously by hackers or security researchers who stumbled upon flaws while exploring software systems. These discoveries were typically shared within informal networks or underground communities, where individuals exchanged knowledge and techniques for identifying vulnerabilities.