Cybercriminal Albert Gonzalez has been jailed for 20 years for accessing the details of over 30 million credit and debit cards.
One judge at the trial described his crimes as, "the largest and most costly example of computer hacking in US history".
Gonzalez pleaded guilty to three cases of fraud at his court case last year. The 28 year old, revealed that he had committed many of these crimes during his time working as an informant for the US secret service.
As part of the court agreement, Gonzalez was forced to hand over 1 million pounds which he had buried in the garden of his parents, his condo, a car and a diamond ring.
Assistant Attorney General Lanny Breuer of the Department of Justice said that every day, "cyber criminals try to steal the debit and credit card numbers of unsuspecting American consumers."
"These sentences - some of the longest ever imposed for hacking crimes - send a powerful message to hackers around the globe that US law enforcement will not allow them to breach American computer networks and payment systems, or illegally obtain identities."
Amichai Shulman, chief technology officer of Imperva, said that hackers "continue to put up a persistent and very real threat to enterprise systems".
"The current data security spend is focused on enterprise networks, yet the Gonzalez attacks took distinct advantage of weaknesses in the database and applications. This is an industry-wide problem."
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