Digital detectives who have tracked Sobig's origins now describe an elaborate criminal enterprise in which code-writers issued steadily improving versions, each one harder to kill than its predecessor.

FORBES: Criminal Outbreak

Digital detectives who have tracked Sobig's origins now describe an elaborate criminal enterprise in which code writers issued steadily improving versions, each one harder to kill than its predecessor.

FORBES: Criminal Outbreak

Liberty Reserve's origins are obscure, but it had grown into one of the criminal underworld's best known electronic currency systems, used by hackers the world over to discreetly move large sums of money across borders, experts say.

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