US, Spanish and Slovenian law enforcement authorities on Wednesday announced the arrest of the suspected creator of the "Mariposa Botnet," a vast network of virus-infected computers used by criminal hackers.

The suspect, a 23-year-old Slovenian citizen identified only as "Iserdo," was arrested by Slovenian police last week, the FBI, the Slovenian Criminal Police and the Spanish Guardia Civil said in a joint statement.

Three suspected Mariposa Botnet operators — Florencio Carro Ruiz, Jonathan Pazos Rivera, and Juan Jose Bellido Rios — were arrested in Spain in February and are facing prosecution for computer crimes. A botnet is a network of malware-infected computers that can be controlled remotely and used to carry out attacks or other operations.
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