smurfing

World English Dictionary
smurfing (ˈsmɜːfɪŋ)
 
n
1.  computing the activity of using a specially designed computer program to attack a computer network by flooding it with messages, thereby rendering it inoperable
2.  the activity of laundering money by conducting a large number of small transactions through banks and bureaux de change
 
[C20: (sense 1) from smurf, the name of the type of computer program used to carry out such attacks]

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