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Tampa teen accused of being 'mastermind' of Twitter hack pleads not guilty

The 17-year-old Tampa teen is facing 30 charges for allegedly "scamming people across America."

TAMPA, Fla. — A Tampa teen accused of being "the mastermind" behind a huge Twitter hack entered a not guilty plea at an arraignment hearing Tuesday morning.

Graham Clark, 17, is among three people facing charges for their alleged roles in the July 15 Twitter hack of prominent Twitter accounts, including that of former President Barack Obama and SpaceX founder Elon Musk. 

Hillsborough State Attorney Andrew Warren says Clark is facing 30 charges for allegedly "scamming people across America."

In total, the U.S. Department of Justice says approximately 130 Twitter accounts were hacked.

“These crimes were perpetrated using the names of famous people and celebrities, but they’re not the primary victims here. This ‘Bit-Con’ was designed to steal money from regular Americans from all over the country, including here in Florida. This massive fraud was orchestrated right here in our backyard, and we will not stand for that,” Warren said. 

Clark was arrested early Friday morning at his Tampa apartment.

The state attorney's office said Clark's scheme included stealing identities of prominent people and celebrities, posting messages in their names and directing Twitter users to send Bitcoin to accounts associated with Clark.

The investigation found Clark reaped more than $100,000 in Bitcoin from 400 transfers in a day.

As a cryptocurrency, Bitcoin is difficult to track and recover if stolen in a scam, Warren said.

Cyber experts say Clark bypassed technology and played with human emotion.

"A big challenge is what's called social engineering, where it is getting you to give up the information and being able to build that trust level with people that they tell you things that they shouldn't be telling you," Patrick Craven with the Center for Cyber Safety and Education said.

While Twitter's security has come under fire for the hack, experts say not all of the blame can be put on the company. 

Later Friday, the U.S. Attorney's Office in the Northern District of California announced two other people had been charged in the Twitter hack.

Mason Sheppard, aka "Chaewon", 19, of the United Kingdom, was charged with conspiracy to commit wire fraud, conspiracy to commit money laundering and the intentional access of a protected computer.

Nima Fazeli, aka "Rolex", 22, of Orlando, was charged with aiding and abetting the intentional access of a protected computer.

Acting Assistant Attorney General Brian C. Rabbit of the Justice Department's Criminal Division said the three people reportedly compromised more than 100 social media accounts and "scammed both the account users and the others who sent money based on their fraudulent solicitations."

Florida's Chief Financial Officer Jimmy Patronis expressed his concern about the alleged role of a teen in the hack, calling it "mind-boggling" and called on Twitter to "step up its game."

Clark is scheduled for a bond hearing Wednesday at 9 a.m.

RELATED: State Attorney: Tampa teen 'mastermind' of Twitter hack of celebrities gets bond set at $750K

RELATED: Obama, Biden, Bill Gates among high-profile Twitter accounts hacked in bitcoin scam

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