From securityboulevard.com
One common security threat that corporate networks, applications and web-based services have been failing to effectively defend against is distributed denial of service (DDoS) attacks. In this form of attack, the perpetrator purposely overloads an application with requests, rendering it unavailable. This type of distributed attack is challenging to block. DDoS attacks involve hackers attempting to prevent users from accessing and utilizing a service by either causing it to crash or overwhelming it with traffic/requests.