Denial of Service (DoS) is a common attack method used to flood network connections with the intention to render the network server unusable. DoS attacks are typically motivated by retaliation, perhaps from a fired employee or various other reasons, including social hacktivism or cyber terrorism. Most DoS attacks target web servers by overwhelming them with SYN requests faster than the server can respond to them. DoS attacks can barrage a server by depriving it of other critical resources such as CPU, memory, and bandwidth possibly leading to a system crash.
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