A man types on a keyboard in front of the logo of ''Kosova Hackers Security'' in this photo illustration taken in Sarajevo, Bosnia and Herzegovina, October 16, 2015.
PHOTO: REUTERS
It was the first time Ardit Ferizi, 20, had publicly appeared in the United States since being extradited from Malaysia, where he was detained in October on a US provisional arrest warrant.
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Ferizi, who is believed to be the leader of a Kosovar Internet hacking group, hacked the computer server ofa US online retailer and stole the personal identification information of 1,351 US military personnel, according to charging documents.
The criminal complaint says Ferizi provided the list to Islamic State members including the British hacker Junaid Hussain, who linked to the list in an August 11, 2015, tweet titled "NEW: US Military AND Government HACKED by the Islamic State Hacking Division!"
Twitter messages from Ferizi to other Islamic State-affiliated Twitter accounts show that he also offered to build the group a computer program enabling them to post propaganda that would "never get deleted," according to court records.
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US officials called Ferizi's case the "first of its kind" when his arrest was announced last year, but he is one of at least 79 individuals whom US prosecutors have charged with Islamic State-related crimes in the past two years.
An Albanian interpreter has been appointed in advance of his next court appearance on Friday.
Ferizi faces a maximum sentence of 35 years in prison if convicted.
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