Hamza Bendelladj (Arabic: ???? ?? ????), is an Algerian hacker who goes by the code name BX1, and has been nicknamed the "Smiling Hacker".
Born in 1988 in Tizi Ouzou, Algeria, he was on the top 10 list of the most wanted hackers by Interpol and the FBI, for allegedly embezzling tens of millions of dollars from more than two hundred American and European financial institutions, via a computer virus, the "RimiG33k" that infected more than 50 million computers worldwide (mostly from the United States), which he developed with his Russian accomplice Aleksandr Andreivich Panin, aka "Gribodemon", to steal banking information stored on infected computers.