Yevgeniy Nikulin, who arrived overnight in the US, faces cybercrime, including cyber-intrusion and identity theft. Nikulin responded to all charges. He declined to give his name and age when asked by the judge, who then told him of his right to be silent, that he could already be aware of this right.
The government told the judge that Nikulin represents a serious escape risk and said that he is a Russian citizen who was extradited by the Czech Republic. The prosecution said they had informed the Russian consulate in Houston about the extradition and detention of Nikulin.
Nikulin was arrested by the Czech police in Prague in 2016 after US authorities issued an international arrest warrant. A grand jury indictment filed in California in 201
According to the indictment, Nikulin broke into LinkedIn's computer in March 2012 for stealing the username and password of an employee at the company's headquarters in Mountain View, California.
Nikulin denies all allegations.
He will now remain in custody, and a pre-trial can take place on Monday; He should also have a status hearing on Monday. He will get another medical exam and then the FBI will take him to court and take him to US Marshals, and then most likely to Santa Rita Prison. On Wednesday there will be a hearing. No date has yet been set for a trial before US District Judge William Alsup.
The FBI issued a statement that the office "will not allow international cybercriminals to operate with impunity."
"Nikulin is said to have targeted three Bay Area companies through cyber attacks and are now being prosecuted in the United States," said FBI Special Envoy John F. Bennett in the statement. "This delivery is a success for the US law enforcement agencies and our overseas partners."
His extradition from the Czech Republic to the United States was the culmination of a year and a half legal and political struggle between the US and Russia, and the case reached the highest levels of politics in the Czech Republic, the US and Russia.
Soon after his arrest and the US extradition request, the Russian government demanded that Nikulin be extradited to his home country by an online money transfer company in 2009 for alleged theft.
The Russian Foreign Ministry said at the time that it wanted to prevent Nikulin's extradition to the United States.
US Parliament Speaker Paul Ryan met with Czech Prime Minister Andrej Babis earlier this week on his visit to Prague. A spokesman for Babis said that the subject of Nikulin's extradition was discussed during the meeting.
Robert Pelikan, the Czech Minister of Justice, told CNN that the move to deliver Nikulin to the US was a "simple decision" after comparing the alleged crimes in the US and Russia and comparing the strength of the countries to be delivered him. He also said he did not feel pressured by the Russians.
Pelikan added that he had made the decision "a long time ago," but waited for all trials to be over.
The Nikulin case further weighed on US-Russian relations. The Russian authorities have objected to US efforts to extradite Russian nationals from third countries in connection with alleged hacking offenses. American authorities filed extradition requests for Russian hackers arrested in Latvia, Spain and Greece
CNN's Augie Martin, Evan Perez, Shimon Prokupecz, Veronica Stracqualursi and Tomas Etzler contributed to the report.