A denial-of-service attack is an online attack where the hackor/perpetrator attempts to make a server or network unavailable by temporarily or indefinitely disrupting services.
The most common way is to send a large number of requests to a server causing it to use up all of its resources or network speed. Without any protection in place a server will be overloaded with requests which would slow the network down to a halt.
Our data centres are protected by an in-house DDoS filtering and scrubbing centre with upto 200Gb/s of incoming protection from Corero (UK) and equivalent providers in our other hosting locations. Our UK data centre also provides additional security benefit of Level 7 DDoS protection with Corero.