Distributed Denial of Service attack. Spam a web server with so many requests so close together that it crashes. Sometimes spitting out valuable information as it crashes.
a weakness which can be exploited by a malicious actor / attacker to perform unauthorized actions within a computer system.
a piece of software, a chunk of data, or a sequence of commands that takes advantage of a bug or vulnerability to cause unintended or unanticipated behavior to occur on computer software, hardware, etc.