0 an occasion when a computer network or website is intentionally prevented from working correctly, by a person or group sending a large amount of data at one time:
1 a situation in which people intentionally prevent a website from operating by sending too many requests to use it:
Denial of service can also be created by "mail bombing" - flooding computer servers with mass emails.
If a denial-of-service attack is imminent, there isn't much the victim can do to stop it.
The organization detects between 30 and 50 denial of service attacks every day around the world.