DDoS stands for Distributed Denial of Service. It is a type of cyber attack in which multiple compromised systems are used to flood a targeted website or network with a huge amount of traffic, making the website or network unavailable to legitimate users.

The goal of a DDoS attack is to overload the targeted website or network with traffic, causing it to slow down or crash. Attackers can use a variety of techniques to carry out a DDoS attack, including botnets, amplification attacks, and protocol attacks.

DDoS attacks can be launched for various reasons, such as financial gain, political motives, revenge, or simply for fun. They can cause significant damage to a business or organization by disrupting their online operations and damaging their reputation. As such, DDoS attacks are taken seriously and are considered a major threat to cybersecurity.