<span>The denial of service attack that exploits the existence of software flaws to disrupt a service is the teardrop attack. </span>The teardrop attack exploits flaws in the way older operating systems handled fragmented Internet Protocol (IP) packets. <span>Fragmented packets are sent to a target machine but the target machine cannot reassemble them due to a bug in TCP/IP fragmentation reassembly, the packets overlap one another. This results in crash in the target network device. </span>