A California man was arrested this week for allegedly attacking organisations, including the anti-phishing community CastleCops, with botnets.

Greg King, 21, has been charged with four counts of electronic transmission of codes to cause damage to protected computers.

The charges are the result of an FBI investigation, according to US Attorney McGregor Scott of the Eastern District of California.

King, also known online as “Silenz,” “Silenz420,” “sZ,” “GregK,” and “Gregk707,” allegedly controlled more than 7,000 servers as part of his botnet, according to Assistant US Attorney Matthew Segal.

If convicted, King faces a maximum sentence of 10 years in prison and a $250,000 fine.

When FBI agents tried to arrest King, he fled through the back door of his residence carrying a laptop, then dropped the computer in the bushes of his backyard. Agents obtained a warrant to search the property and seized the laptop, according to the attorney's office.

King is accused of launching attacks on the server of KillaNet, a cyber-education organisation, between July 2004 and December 2006, and attacking CastleCops from 17-18 February this year.

Paul Laudanski, CastleCops founder and co-owner, said that he may have to testify at King's trial.

KilllaNet, in a statement released on Monday, accused King of attacking its servers in December 2003, before he was 18-years-old.

Tami Quiring, KillaNet owner, said in a prepared statement that King, threatened the organisation because it would not give in to his demands to shut down.